ROISTER Meaning of ROISTER in English roister BrE AmE ˈrɔɪst ə AmE \ - ə r▷ roister|ed d▷ roistering ˈrɔɪst ə r‿ɪŋ▷ roister|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012