Prefix List - 2014

This list includes the most common prefixes (a word element that only used as a prefix) and combining forms. Please note that prefixes can be used by itself (prefix), with space (prefix ), or with hyphen (prefix-). For example, prefix of "non" can be added to word significant as:

  • nonsignificant|significant
  • non-significant|significant
  • non significant|significant
The following tables list all prefixes for Lexical Tools derivations:

 PrefixClassSenseNegationExamplePrecisionInstancesOccurrencesExceptionsStatus
1 Afro O relating to Africa O Afro-American 60.00% 20 12 8 2012
2 Anglo O relating to England O Anglo-Irish 45.83% 24 11 13 2012
3 Euro O European O Eurocentric 40.00% 15 6 9 2012
4 Franco O French, France O Francophile 0.00% 6 0 6 2012
5 Indo O relating to the Indian subcontinent O Indo-European 52.38% 21 11 10 2012
6 a B lacking in, lack of, not, without N asexual, asymmetric 27.65% 1262 349 913 2012
verb > predicative adjective with progressive aspect O afloat, atremble
on, in, at O abed, amidst, ashore
in (such) a state or condition O afresh
in (such) a manner O aloud, alive
7 abs O away, from O abstract 0.00% 15 0 15 2014
8 af O addition or increase O affirm 4.62% 65 3 62 2014
9 ambi O both O ambitendency 50.00% 28 14 14 2012
10 amphi O two, both, on both sides O amphiaster, amphitheater, amphibian 62.50% 40 25 15 2012
11 an B lacking in, lack of, not, without N anemic 36.21% 290 105 185 2012
up, against O anode
12 ana O up, against O anatoxin 17.89% 95 17 78 2012
13 ante O before O antenatal 57.89% 57 33 24 2012
14 anti N opposite, against N anti-war, antivirus, anti-human 77.05% 6618 5099 1519 2012
15 apo O away, different from O apomorphine 67.65% 170 115 55 2012
detached, separate O apocarpous
formed from, related to O apocodeine
16 arch O supreme, highest, worst O archangel 16.22% 37 6 31 2012
preeminent, extreme O archcapitalist, archinfamy
first in time, primitive O archfather, archform
17 astro O star O astrobiology 46.34% 41 19 22 2012
astrological, astrological and O astrodiagnosis, astromedical
aster in cells O astrosphere
18 at O change into, movememnt to, addition or increase O attend 3.95% 76 3 73 2014
19 auto O self O autobiography, automatic 44.17% 806 356 450 2013
automatic, self-acting, self-regulating O autofeed, autowind
of, by, affecting or for the same individual O autohemagglutination, autovaccine
self-caused, self-induced O autointoxication
acting as an antibody on or produced as an antibody for one’s own antigens O autoagglutinin, autohemolysin
20 be O equipped with, covered with, beset with (pejorative or facetious) O bedeviled, becalm, bedazzle, bewitch 21.16% 189 40 149 2012
to a great degree, thoroughly O becudgel, befuddle, bespatter
about, to, at, upon, against; intransitive verbs from intransitive verbs O bestride, bespeak
make, cause to be, treat as; verbs from adjectives or nouns O belittle, benumb, befriend
chemical prefix of unknown meaning O bekanamycin, bemethyl
21 bi O two O bicycle 44.92% 866 389 477 2012
22 bio O biological O biodegrade 48.65% 1077 524 553 2012
23 bis O both; of or belonging to both; two O bisischiatic, bismarine 72.22% 108 78 30 2014
doubled O bisdimethylamino, bisquaternary
24 circum O around O circumnavigate 58.06% 124 72 52 2012
25 cis O on this side O cis-vaccenate 78.57% 42 33 9 2014
26 co O joint, with, accompanying O co-worker, coordinator, cooperation, cohabit 36.66% 1342 492 850 2012
in or to the same degree O coextensive, coeval
operating together or reciprocally O coterm
of the complement of an angle O cosine, codeclination
27 col O together or with O colleague 9.09% 77 7 70 2012
colon O colectasia
28 com O together or with O commingle 1.80% 167 3 164 2012
29 con O together or with O confederation 12.93% 410 53 357 2012
cone O conus
30 contra N opposite N contradict 38.10% 84 32 52 2012
31 cor O together or with O correlation 5.50% 109 6 103 2012
32 counter N against, in opposition to N counteract, counterpart 54.99% 411 226 185 2012
33 cryo O ice O cryogenics 51.25% 320 164 156 2012
34 crypto O hidden, secret O cryptography 66.10% 59 39 20 2012
35 de B reverse action, get rid of N de-emphasise 33.44% 1887 631 1256 2012
down O depress
get off of (something) O detrain, deplane
derived or compounded from (something) O deacetyl
having removal of one or more atoms of (a specified element) O dehydro-, deoxy-
36 demi O half O demiembryo, demispan 64.71% 17 11 6 2012
37 demo O people O demography 0.00% 14 0 14 2012
38 di O two O dioxide 72.49% 1665 1207 458 2012
39 dif O apart O differ 5.00% 20 1 19 2014
40 dis N not, opposite of N disloyal, disagree 31.95% 723 231 492 2014
reverse action, get rid of N disconnect, disinformation
apart N dissect
41 down O to make something lesser, lower or worse O downgrade �% 0 0 0 TBD
42 du O two O duet 1.69% 59 1 58 2013
43 duo O two O duovirus 53.85% 13 7 6 2013
44 dys B abnormal, diseased, bad, unfavorable,faulty N dysplasia, dyspathy, dysfunction 63.20% 250 158 92 2012
difficult, with difficulty O dysmenorrhea, dysoxidize
absence or reverse of O dysteleology
45 eco O ecological O ecosystem 38.20% 89 34 55 2013
46 electro O electric, electricity O electroablation 50.59% 759 384 375 2013
electromagnetic O electrochronograph
electron-related O electrophilic
47 em O to make into, to put into, to get into O empower 17.28% 81 14 67 2013
to provide with O empower
to cause to be (sometimes with suffix –en) O embolden
so as to cover or surround; thoroughly O embower
48 en O to make into, to put into, to get into O enmesh 28.49% 351 100 251 2013
in, within, inside O endermic, enzootic
chemically saturated; having one double bond O enamine
49 epi O upon, at, close upon, in addition O epidermis 48.52% 371 180 191 2013
petrographically altered O epidiorite
epimer of a specified chemical compound O epicholesterol, epirhamnose
chemical compound or group distinguished from another by having a bridge connection O epichlorhydrin
50 ex O former O ex-wife 15.06% 332 50 282 2013
out of O export
51 extra O outside O extracurricular 69.08% 1465 1012 453 2013
52 fore O before O forearm, forerunner 44.24% 165 73 92 2013
at or toward the front; the front part of something O forearm
53 geo O relating to the earth or its surface O geography 50.81% 124 63 61 2013
54 gyro O spinning on an axis O gyrokinetic 45.45% 11 5 6 2013
in a ring or spiral O gyromancy
55 haem O blood O haemagglutinin 35.00% 60 21 39 2014
56 haemo O blood O haemodialysis 48.85% 217 106 111 2014
57 hem O blood O hemagglutinin 22.22% 72 16 56 2014
blood O hemagglutinin
blood O hemagglutinin
58 hemi O half O hemiataxia 58.22% 438 255 183 2013
59 hemo O blood O hemodialysis 48.65% 222 108 114 2014
60 hetero O different O heterosexual 51.21% 373 191 182 2013
isomeric with or closely related to a (specified) compound O heteroxanthine
61 homo O same O homogenous, homologous 55.39% 334 185 149 2013
homologous with a (specified) organic compound O homoserine
from the same species; corresponding in type of structure O homograft, homolysin
62 hydro O relating to water, or using water O hydroelectricity 58.55% 345 202 143 2013
containing hydrogen O hydroborate
characterized by an accumulation of fluid in a (specified) body part O hydronephrosis
hydroid O hydromedusa
63 hyper O above, over O hyperthermia 55.93% 1307 731 576 2013
64 hypo O under or below something, low O hypothermia 59.91% 681 408 273 2014
65 ideo O image, idea O ideograph 37.04% 27 10 17 2014
66 idio O individual, personal, unique O idiographic 34.69% 49 17 32 2014
67 il N not, opposite of N illegal 25.53% 47 12 35 2014
68 im N not, opposite of N immature 22.16% 361 80 281 2014
69 in B in, into O insert 34.52% 1686 582 1104 2014
not, opposite of N inexact
70 infra O below, beneath O infrared 65.61% 503 330 173 2014
71 inter O among, between O intercede, interstate, interact 65.70% 4193 2755 1438 2012
72 intra O inside, within O intravenous 66.33% 3603 2390 1213 2012
73 ir N not, opposite of N irregular 31.65% 139 44 95 2014
74 iso O equal O isochromatic 73.78% 801 591 210 2014
75 macro O long O macrobiotic 57.49% 334 192 142 2014
76 mal O bad(ly) O malfunction 28.12% 160 45 115 2014
77 maxi O very long, very large O maxi-circle 25.00% 16 4 12 2014
78 mega O great, large O megabase 63.29% 158 100 58 2014
79 megalo O great, large O megastar, megalopolis 62.07% 29 18 11 2014
80 meta O after, along with, beyond, among, behind O meta-theory 59.75% 631 377 254 2014
81 micro O small O microautoradiogram 51.54% 2074 1069 1005 2014
82 mid O middle O midlife 51.24% 806 413 393 2014
83 midi O medium-sized O midiplasmin 100.00% 2 2 0 2014
84 mini O small O minibus 61.01% 218 133 85 2014
85 mis N wrong, astray N misinformation, misguide 49.17% 539 265 274 2014
86 mono O sole, only O monogamy 62.82% 831 522 309 2014
87 multi O many O multi-storey 57.64% 4016 2315 1701 2012
many times over; in many respects O multimillionaire, multispecialist
affecting many parts O multiglandular
88 neo O new O neolithic 53.85% 390 210 180 2014
89 non N not N nonexistent 76.34% 16966 12952 4014 2012
90 ob O blocking, against, concealing O ibstruct 4.00% 50 2 48 2014
91 oc O blocking, against, concealing O occult 0.00% 28 0 28 2014
92 of O blocking, against, concealing O offend 0.00% 7 0 7 2014
93 omni O all O omnipotent, omnipresent 47.83% 23 11 12 2012
94 op O blocking, against, concealing O oppose 2.13% 47 1 46 2014
95 ortho O correcting or straightening O orthodontics, orthotropic 67.55% 188 127 61 2012
indicates a 1,2-substituted benzene ring in organice chemistry O orthonitrophenol
indicates the common form of an acid in inorganic chemistry O orthoboric acid
chemical prefix O orthoformate
96 out O better, faster, longer, beyond O outreach, outcome 18.59% 312 58 254 2012
97 over O too much O overreact, overact 47.84% 1415 677 738 2012
98 paed O child O TBD 0.00% 2 0 2 2014
99 paedo O child O TBD 77.78% 9 7 2 2014
100 paid O child O TBD �% 0 0 0 2013
101 paido O child O TBD �% 0 0 0 2013
102 paleo O old O paleolithic 50.00% 66 33 33 2012
103 pan O all, worldwide O pan-African 52.22% 293 153 140 2012
104 para O beside, beyond O parallel 64.69% 946 612 334 2012
isomeric with, polymeric with, or otherwise closely related to O paracasein
the relation of two opposite positions in the benzene ring that are separated by two carbon atoms O TBD
a derivative in which two substituting groups occupy such positions O para-xylene
105 ped O foot O pedestrian 7.69% 13 1 12 2012
creature or object having feet or footlike projections O Pediastrum, pedrail
something (specified) involving feet O pedomotor
child O TBD
106 pedo O child O TBD 31.82% 22 7 15 2014
107 per O through, completely, wrongly, exceedingly O permeate, permute 29.24% 277 81 196 2012
in chemistry, to denote a large amount or designate combination of an element in its highest valence O perchloroethylene
108 peri O around O periabdominal 72.17% 1937 1398 539 2012
near O perihelion
enclosing, surrounding O perineurium
tissue surrounding (specified part) O periarthritis
109 photo O light, photography, photograph O photoelectric 67.47% 953 643 310 2012
110 pod O foot O podiatrist 0.00% 16 0 16 2012
111 poly O many O polygon 67.86% 1005 682 323 2012
chemistry--containing more than one and especially more than two or three units of (a specified substance) O polyatomic
chemistry--polymer of, polymerized O polyethylene
chemistry--isopoly- O polymolybdate
112 post O after O post-election, post-graduation, postpone 80.03% 9666 7736 1930 2012
113 pre O before O pre-election, pre-enter, predict 74.62% 9829 7334 2495 2012
114 preter O beyond, past, more than O preternatural 10.00% 10 1 9 2012
115 pro O for, on the side of O pro-life 40.26% 1068 430 638 2013
substitute, deputy O proconsul
before O procambium
116 pros O toward O Prosthesis 16.67% 18 3 15 2012
117 proto O first, original O protoplasm, prototype 58.58% 169 99 70 2012
118 pseudo O false, imitation O pseudonym 62.78% 3463 2174 1289 2012
119 pyr O fire O pyroantimonate 19.23% 26 5 21 2014
in chemistry, indicates a dimeric acid anhydride O pyrophosphoric acid
due to or or attributed to the action of fire or heat O pyrochlore
of fiery color O pyrophanite
fever, fever producing O pyrotoxin
120 pyro O fire O pyroantimonate 53.44% 131 70 61 2012
in chemistry, indicates a dimeric acid anhydride O pyrophosphoric acid
due to or or attributed to the action of fire or heat O pyrochlore
of fiery color O pyrophanite
fever, fever producing O pyrotoxin
121 quasi O partly, almost, appearing to be but not really O quasiaxial 62.13% 338 210 128 2012
122 re O again, back O rerun 37.18% 4424 1645 2779 2012
123 retro O backwards O retrograde 50.81% 370 188 182 2014
124 self O self O self-sufficient 47.57% 801 381 420 2014
125 semi O half O semicircle 51.51% 930 479 451 2014
126 socio O society, social, sociological O sociopath 50.24% 209 105 104 2014
127 step O family relation by remarriage O stepbrother 11.59% 138 16 122 2014
128 sub O below, under O subway 63.36% 4339 2749 1590 2012
129 sup O below, under O support 1.92% 52 1 51 2014
130 super O above, over O supervisor 48.60% 1574 765 809 2014
131 supra O above, over O suprarenal 62.11% 1082 672 410 2014
132 sur O above, over O surreal, surrender 14.86% 74 11 63 2014
133 sy O together, with O system 0.00% 35 0 35 2014
134 syl O together, with O syllable 0.00% 7 0 7 2014
135 sym O together, with O symbol 17.65% 51 9 42 2014
136 syn O together, with O synthesis 26.09% 138 36 102 2014
137 tele O at a distance O television 50.96% 469 239 230 2014
138 trans O across, from one place to another O transatlantic, transverse 50.87% 1148 584 564 2014
139 tri O three O tricycle 60.73% 871 529 342 2014
140 twi O two O twilight 4.00% 25 1 24 2014
141 ultra O beyond, extremely O ultraviolet, ultrasonic 42.10% 734 309 425 2014
142 un N not, opposite of N unnecessary, unequal 57.51% 2231 1283 948 2012
reverse action, deprive of, release from N undo, untie
143 under B lower in grade/dignity, lesser, insufficient N underachieve 44.60% 695 310 385 2014
below, beneath O underground, underpass
144 uni O one O unicycle 42.67% 300 128 172 2014
145 up O to make something more, higher or better O upgrade �% 0 0 0 TBD
146 vice O deputy O vice-president 78.57% 14 11 3 2014
147 with O against O withstand 20.00% 25 5 20 2014