rue - noun

European strong-scented perennial herb with grey-green bitter-tasting leaves; an irritant similar to poison ivy

leaves sometimes used for flavoring fruit or claret cup but should be used with great caution: can cause irritation like poison ivy

sadness associated with some wrong done or some disappointment

(French) a street or road in France

rue - verb

• feel remorse for; feel sorry for; be contrite about

rue - thesaurus

regret   repent   ruefulness   sorrow