MERCILESS Meaning of MERCILESS in English merciless BrE AmE ˈmɜːs ɪ ləs -ə- AmE \ ˈmɝːs-▷ merciless|ly li▷ merciless|ness nəs nɪs Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012