Definition of "in-" in English

prefix

1. in, into, towards, within.

   • inhold, inmove, intake, inthrill
   • inborn, inbound
   • infield, infighting, insight, intalk, inwork

prefix

1. in, into

   • il- before l, e.g. illusion im- before b, m, or p, e.g. imperil ir- before r, e.g. irrigate

prefix

1. (no longer productive) Used with certain words to reverse their meaning.

   • ig- before n, e.g. ignoble il- before l, e.g. illegal im- before b, m, or p, e.g. improper ir- before r, e.g. irresistible