bitching /ˈbɪt͡ʃɪŋ/adjective 2noun 1forms 2 adjective2 •(slang) Excellent; outstanding.Encino is, like, so bitchin’ — 1982 •(slang) Awful, terrible.Just my bitching luck. noun1 •(informal, vulgar) A spiteful criticism or complaint.Grierson's innocence – although Townsend would say it was naivety – was rather sweet and attractive amid the sour and petty bitchings of the other women. — 1997 formsbitchings · bitchingest