The antithesis of fabulous. Used in any case where a sarcastic intonation would be used on fabulous; a very convenient substitutute for certain expletives in circumstances which demand the regulation of foul language; also an obscenely rotund person who nevertheless performed excellently at a task or looks particularly nice considering her size. Example: What? I have to take my AP Physics and AP Calculus exams on the same day!? Flabulous. OR Although that woman looked to weigh 450 lbs, she did a flabulous job on her hair.
FLABULOUS
Meaning of FLABULOUS in English
Slang English vocab. Английский сленговый словарь. 2012