UNDERACHIEVE Meaning of UNDERACHIEVE in English underachiev|e BrE AmE ˌʌnd ə r ə ˈtʃiːv AmE ˌ• ə r-▷ underachiev|ed d▷ underachiev|er/s ə/z AmE ə r/z▷ underachiev|es z▷ underachiev|ing ɪŋ Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012