Antonym is a 7 letter English word. It's valid Scrabble word worth 12 points. It's valid Words with friends word worth 14 points.
You can make 117 anagrams from letters in antonym (amnnoty).
First recorded in 1865-70; ant- + (syn)onym
In strict usage, daily is the antonym of nightly as diurnal is of nocturnal.
By and by, which was once a synonym, has become an antonym of immediately, meaning at some (perhaps remote) future time.
Logically the other side of white is not white, while the antonym is the extreme black.
12
14