Tuesday, March 12, 2013

Word Part Frequecies


Most Commonly-Used Prefixes
This list, compiled by White, Sowell, and Yanagihara (The Reading Teacher, 42, p. 306), has the 
twenty most frequently-used prefixes. In fact these prefixes make up 97% of all prefixed words. 

Rank/Prefix Meaning 
1. un not 
2. re again 
3. in, im, il, ir not 
4. dis away from 
5. en, em in 
6. non not 
7. in, im in 
8. over above 
9. mis not 
10. sub under 
11. pre before 
12. inter between 
13. fore in front 
14. de apart from 
15. trans across 
16. super above 
17. semi half 
18. anti against 
19. mid middle 
20. under too little Frequently-Used Roots

Root Meaning Origin Example 
aud hear Latin auditorium 
mis send Latin mission 
astro star Greek astrology 
ped foot Latin pedal 
bio life Greek biology 
phon sound Greek telephone 
dict say Latin predict 
port carry Latin import 
geo earth Greek geography 
scrib, scrip write Latin scribble, scripture 
meter measure Greek thermometer 
min little, small Latin minimum 
spect see Latin inspect 
mit, mis send Latin transmit, mission 
struct build, form Latin instruct 
Adapted from Stahl, S.A. and Shiel, T.G., Reading and Writing Quarterly: Overcoming Learning 
Disabilities, 8, 223-241

Most Commonly-Used Suffixes
Suffix Meaning Examples 
_s, _es plural or verb tense cats, pushes 
_ed past verb tense, past participle helped, had helped 
_ing verb tense or noun form indicating on-going action was going, listening 
_ly how, when, where, or under what conditions slowly 
_er, _or one who writer, actor 
_er comparative adjective bigger 
_tion, _ion, the process or act of notion, onion, 
_sion, _ition, tension, partition, 
_ation decoration 
_able, _ible able to be comparable, invisible 
_al, _ial related to mortal, partial 
_y consisting of or inclined toward rainy 
_ness state, quality, condition, degree brightness 
This list was adapted from the research compiled by Cooper 2000. 


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