in-

Ⅰ.

in- [1] (also il- before l; im- before b, m, p; ir- before r) ► PREFIX 1) (added to adjectives) not: infertile. 2) (added to nouns) without; a lack of: inappreciation.

ORIGIN Latin.

Ⅱ.

in- [2] (also il- before l; im- before b, m, p; ir- before r) ► PREFIX ▪ in; into; towards; within: influx.

ORIGIN representing IN(Cf. ↑in) or the Latin preposition in.