Prefix List - 2013

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 27.39% 1256 344 912 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 0 0 TBD
8 af O addition or increase O affirm �% 0 0 0 TBD
9 ambi O both O ambitendency 50.00% 28 14 14 2012
10 amphi O two, both, on both sides O amphiaster, amphitheater, amphibian 64.10% 39 25 14 2012
11 an B lacking in, lack of, not, without N anemic 37.93% 290 110 180 2012
up, against O anode
12 ana O up, against O anatoxin 17.89% 95 17 78 2012
13 ante O before O antenatal 55.36% 56 31 25 2012
14 anti N opposite, against N anti-war, antivirus, anti-human 77.68% 6522 5066 1456 2012
15 apo O away, different from O apomorphine 65.64% 163 107 56 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 �% 0 0 0 TBD
19 auto O self O autobiography, automatic 43.26% 749 324 425 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 44.44% 846 376 470 2012
22 bio O biological O biodegrade 48.25% 1055 509 546 2012
23 bis O both; of or belonging to both; two O bisischiatic, bismarine �% 0 0 0 TBD
doubled O bisdimethylamino, bisquaternary
24 circum O around O circumnavigate 57.26% 124 71 53 2012
25 cis O on this side O cis-vaccenate �% 0 0 0 TBD
26 co O joint, with, accompanying O co-worker, coordinator, cooperation, cohabit 36.83% 1314 484 830 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 7.79% 77 6 71 2012
colon O colectasia
28 com O together or with O commingle 1.84% 163 3 160 2012
29 con O together or with O confederation 12.87% 404 52 352 2012
cone O conus
30 contra N opposite N contradict 39.29% 84 33 51 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 54.16% 397 215 182 2012
33 cryo O ice O cryogenics 49.64% 278 138 140 2012
34 crypto O hidden, secret O cryptography 65.52% 58 38 20 2012
35 de B reverse action, get rid of N de-emphasise 33.46% 1847 618 1229 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 72.89% 1649 1202 447 2012
39 dif O apart O differ �% 0 0 0 TBD
40 dis N not, opposite of N disloyal, disagree �% 0 0 0 TBD
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 1.79% 56 1 55 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 62.45% 245 153 92 2012
difficult, with difficulty O dysmenorrhea, dysoxidize
absence or reverse of O dysteleology
45 eco O ecological O ecosystem 37.21% 86 32 54 2013
46 electro O electric, electricity O electroablation 50.00% 738 369 369 2013
electromagnetic O electrochronograph
electron-related O electrophilic
47 em O to make into, to put into, to get into O empower 17.95% 78 14 64 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 28.99% 345 100 245 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 47.97% 369 177 192 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 13.56% 317 43 274 2013
out of O export
51 extra O outside O extracurricular 69.25% 1460 1011 449 2013
52 fore O before O forearm, forerunner 43.83% 162 71 91 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 �% 0 0 0 TBD
56 haemo O blood O haemodialysis �% 0 0 0 TBD
57 hem O blood O hemagglutinin �% 0 0 0 TBD
58 hemi O half O hemiataxia 57.49% 407 234 173 2013
59 hemo O blood O hemodialysis �% 0 0 0 TBD
60 hetero O different O heterosexual 49.73% 364 181 183 2013
isomeric with or closely related to a (specified) compound O heteroxanthine
61 homo O same O homogenous, homologous 54.85% 330 181 149 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 58.82% 340 200 140 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 56.87% 1273 724 549 2013
64 hypo O under or below something, low O hypothermia �% 0 0 0 TBD
65 ideo O image, idea O ideograph �% 0 0 0 TBD
66 idio O individual, personal, unique O idiographic �% 0 0 0 TBD
67 il N not, opposite of N illegal �% 0 0 0 TBD
68 im N not, opposite of N immature �% 0 0 0 TBD
69 in B in, into O insert �% 0 0 0 TBD
not, opposite of N inexact
70 infra O below, beneath O infrared �% 0 0 0 TBD
71 inter O among, between O intercede, interstate, interact 65.21% 4171 2720 1451 2012
72 intra O inside, within O intravenous 66.01% 3580 2363 1217 2012
73 ir N not, opposite of N irregular �% 0 0 0 TBD
74 iso O equal O isochromatic �% 0 0 0 TBD
75 macro O long O macrobiotic �% 0 0 0 TBD
76 mal O bad(ly) O malfunction �% 0 0 0 TBD
77 maxi O very long, very large O maxi-circle �% 0 0 0 TBD
78 mega O great, large O megabase �% 0 0 0 TBD
79 megalo O great, large O megastar, megalopolis �% 0 0 0 TBD
80 meta O after, along with, beyond, among, behind O meta-theory �% 0 0 0 TBD
81 micro O small O microautoradiogram �% 0 0 0 TBD
82 mid O middle O midlife �% 0 0 0 TBD
83 midi O medium-sized O midiplasmin �% 0 0 0 TBD
84 mini O small O minibus �% 0 0 0 TBD
85 mis N wrong, astray N misinformation, misguide �% 0 0 0 TBD
86 mono O sole, only O monogamy �% 0 0 0 TBD
87 multi O many O multi-storey 57.55% 3882 2234 1648 2012
many times over; in many respects O multimillionaire, multispecialist
affecting many parts O multiglandular
88 neo O new O neolithic �% 0 0 0 TBD
89 non N not N nonexistent 76.45% 16631 12714 3917 2012
90 ob O blocking, against, concealing O ibstruct �% 0 0 0 TBD
91 oc O blocking, against, concealing O occult �% 0 0 0 TBD
92 of O blocking, against, concealing O offend �% 0 0 0 TBD
93 omni O all O omnipotent, omnipresent 47.83% 23 11 12 2012
94 op O blocking, against, concealing O oppose �% 0 0 0 TBD
95 ortho O correcting or straightening O orthodontics, orthotropic 66.48% 182 121 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 18.71% 310 58 252 2012
97 over O too much O overreact, overact 48.93% 1396 683 713 2012
98 paed O child O TBD �% 0 0 0 TBD
99 paedo O child O TBD �% 0 0 0 TBD
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 49.23% 65 32 33 2012
103 pan O all, worldwide O pan-African 51.65% 273 141 132 2012
104 para O beside, beyond O parallel 64.08% 927 594 333 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 �% 0 0 0 TBD
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 71.79% 1911 1372 539 2012
near O perihelion
enclosing, surrounding O perineurium
tissue surrounding (specified part) O periarthritis
109 photo O light, photography, photograph O photoelectric 67.51% 945 638 307 2012
110 pod O foot O podiatrist 0.00% 16 0 16 2012
111 poly O many O polygon 67.35% 971 654 317 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 80.25% 9513 7634 1879 2012
113 pre O before O pre-election, pre-enter, predict 74.71% 9690 7239 2451 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 38.67% 1055 408 647 2013
substitute, deputy O proconsul
before O procambium
116 pros O toward O Prosthesis 17.65% 17 3 14 2012
117 proto O first, original O protoplasm, prototype 57.74% 168 97 71 2012
118 pseudo O false, imitation O pseudonym 62.57% 3382 2116 1266 2012
119 pyr O fire O pyroantimonate �% 0 0 0 TBD
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 51.94% 129 67 62 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 62.16% 333 207 126 2012
122 re O again, back O rerun 36.56% 4251 1554 2697 2012
123 retro O backwards O retrograde �% 0 0 0 TBD
124 self O self O self-sufficient �% 0 0 0 TBD
125 semi O half O semicircle �% 0 0 0 TBD
126 socio O society, social, sociological O sociopath �% 0 0 0 TBD
127 step O family relation by remarriage O stepbrother �% 0 0 0 TBD
128 sub O below, under O subway 63.25% 4291 2714 1577 2012
129 sup O below, under O support �% 0 0 0 TBD
130 super O above, over O supervisor �% 0 0 0 TBD
131 supra O above, over O suprarenal �% 0 0 0 TBD
132 sur O above, over O surreal, surrender �% 0 0 0 TBD
133 sy O together, with O system �% 0 0 0 TBD
134 syl O together, with O syllable �% 0 0 0 TBD
135 sym O together, with O symbol �% 0 0 0 TBD
136 syn O together, with O synthesis �% 0 0 0 TBD
137 tele O at a distance O television �% 0 0 0 TBD
138 trans O across, from one place to another O transatlantic, transverse �% 0 0 0 TBD
139 tri O three O tricycle �% 0 0 0 TBD
140 twi O two O twilight �% 0 0 0 TBD
141 ultra O beyond, extremely O ultraviolet, ultrasonic �% 0 0 0 TBD
142 un N not, opposite of N unnecessary, unequal 57.60% 2224 1281 943 2012
reverse action, deprive of, release from N undo, untie
143 under B lower in grade/dignity, lesser, insufficient N underachieve �% 0 0 0 TBD
below, beneath O underground, underpass
144 uni O one O unicycle �% 0 0 0 TBD
145 up O to make something more, higher or better O upgrade �% 0 0 0 TBD
146 vice O deputy O vice-president �% 0 0 0 TBD
147 with O against O withstand �% 0 0 0 TBD