The opposite is unserious.
Antonyms for the word serious:LightheartedHalfheartedScatterbrainTrivialSuperficialNegligibleInsincereFalseDishonestDeceptiveUnseriousUnimportantFlippantLightMinor
Serious, earnest.
Frivolous
The word duchess does not have an opposite. There are some serious misunderstandings about the meaning of the word opposite. A duke is a counterpart of duchess; it is not opposite.
i believe its being ''serious'' . your welcome. ;)
Depending on how you are using the word, its antonyms are serious, sad, grave, obvious, or conventional.
the opposite of serious could be playful,joyful or happy :)
punish, penalty, take away, penalize, punishment
There is no opposite word for felony. You may be thinkning of the lesser offense, known as a misdemeanor. Both are offenses, but one is more serious than the other.
Silly or goofy
what word is opposite of prudent
The opposite of anything is it's absence. Silence would be the opposite of a word spoken.