/mis fee"zeuhns/ , n. Law.
1. a wrong, actual or alleged, arising from or consisting of affirmative action.
2. the wrongful performance of a normally lawful act; the wrongful and injurious exercise of lawful authority. Cf. malfeasance, nonfeasance .
[ 1590-1600; mesfesance. See MIS- 1 , FEASANCE ]