levity
Definitions
A lack of appropriate seriousness; frivolity.
The treatment of a serious matter with humor or in a manner lacking due respect.
Examples
He tried to inject some levity into the somber meeting by telling a lighthearted joke.
The gravity of the situation left no room for levity among the grieving family members.
Synonyms
flippancy lightheartedness gaiety frivolity vivacity cheerfulness playfulness
Antonyms
seriousness gravity solemnity earnestness sobriety staidness heaviness