Facetious — meaning and usage Facetious /fuh-SEE-shuhs/ · adjective Meaning: Treating serious issues with deliberately inappropriate or flippant humour. Examples: She made a facetious remark about the crisis that upset many. His facetious tone was mistaken for rudeness during the meeting. Would you use this word in writing or speech? #wordoftheday #vocabulary #wordsofuse #learnenglish #englishwords #facetious