HEREWITH Meaning of HEREWITH in English here ‧ with /ˌhɪəˈwɪð, -ˈwɪθ $ ˌhɪr-/ BrE AmE adverb formal with this letter or document:I enclose a copy of this report herewith for your information. Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012