prefix / ɪn; NAmE /
1.
(also il- / ɪl; NAmE / im- /ɪm/ ir- /ɪr/) (in adjectives, adverbs and nouns) not; the opposite of :
infinite
illogical
immorally
irrelevance
2.
(also im- / ɪm; NAmE /) (in verbs) to put into the condition mentioned :
inflame
imperil
••
WORD ORIGIN
from Latin .