FreeVocabulary
Facetious
/fəˈsiː.ʃəs/ adjective mediumJoking about something, especially in a way that is inappropriate for the moment.
His facetious comment about quitting his job was clearly a joke, but his boss didn't find it funny.
Memory Trick
An easy way to remember its spelling: facetious runs through every vowel in order, a-e-i-o-u, just like its joking tone slips past every serious moment.