STIFF Meaning of STIFF in English stiff BrE AmE stɪf▷ stiffer ˈstɪf ə AmE \ - ə r▷ stiffest ˈstɪf ɪst -əst ▶ ˌ stiff ˌ upper ˈ lip BrE AmE Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012