ATHWART Meaning of ATHWART in English I. adverb 1.Synonyms: across 1, crossways, crosswise 2.Synonyms: over 1, across, beyond, transverselyII. preposition Synonyms: across , cross, over Merriam Webster. Collegiate thesaurus English vocabulary. Английский энциклопедический словарь тезаурус. 2003