ATHWART Meaning of ATHWART in English adv. & prep.adv. 1 across from side to side (usu. obliquely). 2 perversely or in opposition. prep. 1 from side to side of. 2 in opposition to. [ A(2) + THWART ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012