1
- (added to adjectives) not[形容词前]表示“不”:
infertile
inapt.
2
- (added to nouns) without; a lack of加在名词前表示“无”, “缺”:
inappreciation.
USAGE
In- is also found assimilated in the following forms: il- before l; im- before b, m, p; ir- before r.
词源
from Latin.