What is another word for "rue"?

Roget's Thesaurus (1911) lists these synonyms for "rue": accusation, acerbity, aching, acrid, acridity, acrimonious, acrimony, again, alas, amaritude, and, austerity, bad, behind, bewail, bitter, bitterness, cast, day, deplore, discontent, disgust, fulsome, gall, hang, have, heartburning, homesick, lament, lamentable, lamentation, laudator, leave, lingering, loathsome, longing, look, mind, most, much.