the state, act, of being flippant

irreverence

frivolous behaviour or character

silliness, childishness

the absence of stability (of character)

imbalance, inconstancy

(an instance of) a lack of seriousness

funniness, silliness

something said, written etc that is foolish or does not make any sense; stupid behaviour

craziness, ridiculousness

imbalance, inconstancy

imbalance, inconstancy