I. prefix
or il- or im- or ir-
Etymology: Middle English, from Anglo-French, from Latin; akin to Old English un-
: not : non- , un- — usually il- before l
il logical
im- before b, m, or p
im balance
im moral
im practical
ir- before r
ir reducible
and in- before other sounds
in conclusive
II. prefix
or il- or im- or ir-
Etymology: Middle English, from Anglo-French, from Latin, from in in, into
1. : in : within : into : toward : on — usually il- before l
il luviation
im- before b, m, or p
im mingle
ir- before r
ir radiance
and in- before other sounds
in filtrate
2. : en- I
im brute
im peril
in spirit