WordReference Random House Unabridged Dictionary of American English © 2026
mal•e•fac•tion
(mal′ə fak′shən),USA pronunciation n.
- an evil deed;
crime;
wrongdoing.
- 1375–1425 for an earlier sense; 1595–1605 for current sense; Middle English malefaccioun impotence; see malefact(or), -ion