showing a sense of guilt; "a guilty look"; "the hangdog and shamefaced air of the retreating enemy"- Eric Linklater
responsible for or chargeable with a reprehensible act; or marked by guilt; "guilty of murder"; "the guilty person"; "secret guilty deeds"; "a guilty conscience"; "guilty behavior"
a word that expresses a meaning opposed to the meaning of another word, in which case the two words are antonyms of each other; "to him the antonym of `gay' was `depressed'"
feeling or expressing regret or sorrow or a sense of loss over something done or undone; "felt regretful over his vanished youth"; "regretful over mistakes she had made"; "he felt bad about breaking the vase"
(pharmacology) a book containing a compilation of pharmaceutical products with their formulas and methods of preparation; "postexposure prophylaxis is an integral part of the pharmacopeia in preventing severe disease after acute infections"