Definition of “campy” - English Dictionary. See all translations. uk ​ /ˈkæm.pi/ us ​ /ˈkæm.pi/ mainly US informal UK usually camp. › used to describe an activity, or someone's behaviour or appearance, that is funny because it is obviously intended to be strange or shocking: The result is a mixed bag of campy humour and special effects. (Definition of “campy” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)