stereotypyPronunciation: /ˈstɛrɪə(ʊ)ˌtʌɪpi, ˈstɪə-/Definition of stereotypy noun [mass noun] the persistent repetition of an act, especially by an animal, for no obvious purpose: the most common abnormal behaviour among zoo animals is stereotypystereotypy in other Oxford dictionaries Definition of stereotypy in the US English dictionary