I. prefix
or il- or im- or ir-
Etymology: Middle English, from Middle French, Old French, & Latin; Middle English in- from Old French, from Latin; Middle English il- from Middle French, from Latin, from in-; Middle English im- from Old French, from Latin, from in-; Middle English ir- from Old French, from Latin, from in-; akin to Old English un- — more at un-
: not : non- , un- — usually il- before l
il logical
and im- before b, m, or p
im balance
im moral
im provident
and ir- before r
ir reducible
and in- before other sounds
in active
in apt
in conclusive
II. prefix
or il- or im- or ir-
Etymology: Middle English, from Old French, Middle French, & Latin; Middle English in- from Old French in-, en-, from Latin in-, from in in, into; Middle English il- from Middle French, from Latin, from in; Middle English im- from Middle French im-, em-, from Latin im-, from in; Middle English ir- from Latin, from in — more at in I
1. : in : within : inward : into : toward : on
im plode
ir radicate
2. : en- I
il lucidate
im barn
im marble
im panel
im peril
in spirit
— in both senses usually il- before l, im- before b, m, or p, ir- before r, and in- before other sounds
III. combining form
or ino-
Etymology: New Latin in-, from Greek, tendon, from in-, is; probably akin to Latin viēre to plait — more at withy
: fiber : fibrous tissue
in itis
ino gen