1) Bantering 2) Cleverly amusing in tone 3) Flippant 4) French word used in English 5) Humorous 6) Jesting 7) Playfully jocular Found on https://www.crosswordclues.com/clue/facetious
• (a.) Given to wit and good humor; merry; sportive; jocular; as, a facetious companion. • (a.) Characterized by wit and pleasantry; exciting laughter; as, a facetious story or reply. Found on http://thinkexist.com/dictionary/meaning/facetious/
Fa·ce'tious adjective [ Confer French facétieux . See Facetiæ .] 1. Given to wit and good humor; merry; sportive; jocular; as, a facetious companion. 2. Characterized by wit and pleasantry; exciting laughter; as, a facetious story or reply. -- Fa*ce... Found on http://www.encyclo.co.uk/webster/F/1
facetious 1. Playfully jocular; humorous: 'He was constantly making facetious remarks.' 2. Cleverly amusing in tone; intended to be humorous, but often silly or inappropriate. 3. Lacking serious intent; concerned with something nonessential, amusing, or frivolous: 'She was always a facetious person who never took anything seriously.' 4. Etymolog... Found on http://www.wordinfo.info/words/index/info/view_unit/4244/