DOWNSIZE Meaning of DOWNSIZE in English downsiz|e BrE AmE ˈdaʊn saɪz ˌ•ˈ• ▷ downsiz|ed d▷ downsiz|es ɪz əz ▷ downsiz|ing ɪŋ Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012