Entry 2 senses · 2 variants Webster, 1913 bitching · bitch·ing · IPA /ˈbɪt͡ʃɪŋ/ n. adj. 01 n. complaining; griping. 1. complaining; griping.[slang] 02 adj. an informal intensifier; as, we had a bitching good time. 1. an informal intensifier; as, we had a bitching good time.[slang]