UNDERCOOK Meaning of UNDERCOOK in English undercook BrE AmE ˌʌnd ə ˈkʊk § -ˈkuːk AmE - ə r-▷ undercook|ed t ◂▷ undercook|ing ɪŋ▷ undercook|s s Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012