Most Common Prefixes
PREFIX MEANING KEYWORD
anti |
against |
antifreeze |
de- |
opposite |
defrost |
dis-* |
not, opposite of |
disagree |
en-, em- |
cause to |
encode, embrace |
fore- |
before |
forecast |
in-, im- |
in |
infield |
in-, im-, il-, ir-* |
not |
injustice, impossible |
inter- |
between |
interact |
mid- |
middle |
midway |
mis- |
wrongly |
misfire |
non- |
not |
nonsense |
over- |
over |
overlook |
pre- |
before |
prefix |
re-* |
again |
return |
semi- |
half |
semi- half semicircle |
sub- |
submarine |
super- |
super- |
above |
superstar |
trans- |
across |
transport |
un-* |
not |
unfriendly |
under- |
under |
undersea |
Most Common Suffixes
SUFFIX MEANING KEYWORD
-able, -ible |
can be done |
comfortable |
-al, -ial |
having characteristics of |
personal |
-ed* |
past-tense verbs |
hopped |
-en |
made of |
wooden |
-er |
comparative |
higher |
-er, one |
who |
worker, actor |
-est |
comparative |
biggest |
-ful |
full of |
careful |
-ic |
having characteristics of |
linguistic |
-ing* |
verb form/present participle |
running |
-ion, -tion, -ation, ition |
act, process |
occasion, attraction |
-ity, -ty |
state of |
infinity |
-ive, -ative, -itive |
adjective form of noun |
plaintive |
-less |
without |
fearless |
-ly* |
characteristic of |
quickly |
-ment |
action or process |
enjoyment |
-ness |
state of, condition of |
kindness |
-ous, -eous, -ious |
possessing the qualities of |
joyous |
-s, -es* |
more than one |
books, boxes |
-y |
characterized by |
happy |