bemoan/bɪˈməʊn/EtymologyFrom Middle English bemenen, bimenen, from Old English bemǣnan (“to bemoan, bewail, lament”); equivalent to be- (“about, concerning”) + moan. Alteration of vowel from Middle to Modern English due to analogy with moan.bemoan means To moan or complain about (something). Lexicurio rates it Rare gem — a strength score of 77 out of 100.verbTo moan or complain about (something).“He bemoaned the drought but went on watering his lawn.”To be dismayed or worried about (someone), particularly because of their situation or what has happened to them.“Son. Was ever son so rued a father’s death? Father. Was ever father so bemoan’d his son?”