0 not serious about a serious subject, in an attempt to be funny or to appear clever:
1 showing or having a rude attitude of not being serious esp. by trying to be amusing when most people expect you to be serious:
Without being flippant, this reviewer would reply that they were largely being determined on the field of battle - something that overshadowed everything else.
Now this sounds flippant, this not getting things serviced.
This new art was only apparently flippant and friendly.
Jung's handling of persona questions seems somewhat flippant.
He was very flippant in parts of his speech and completely callous in other parts of it.
It would be difficult to devise a more callous and flippant answer than that.
I must not become flippant, because this is an important subject.
This is not a laughing matter to be treated in the flippant tone that she has adopted.