farewell or goodbye
An antonym may be disregard, shun, and ignore.
informal
No. AN antonym for deceased would be alive. An antonym for friendly would be unfriendly or hostile.
No. An antonym for answer would be unknown or mystery.
Elation would be an antonym.
There would not be an antonym for equipment.
An antonym for alert would be notify or inform.
In the sense of 'lewd', an antonym would be 'conservative' or 'puritanical'. In the sense of 'slippery', an antonym would be 'sticky'.
synonym would be contemplated. antonym would be disregarded.
The antonym of prehistoric would be, modern.
"Lose" would be an antonym for "win". "Defeat" would b e an antonym for "Victory".
An antonym is a word that has the opposite meaning. One antonym for "polite" would be "rude"; another would be "obnoxious".