Words related to -al
"act of burying," late 13c.; earlier "tomb" (c. 1200), false singular from Old English byrgels "tomb," from byrgan "to bury" + suffix -els; a compound also found in Old Saxon burgisli, suggesting a Proto-Germanic *burgisli-, from PIE root *bhergh- (1) "to hide, protect." The Germanic suffix *-isli- (also in riddle (n.1), Old English hydels "hiding place," fætels "bag") became obsolete and was felt as a plural of the Latin-derived suffix -al (2) forming nouns of action from verbs (survival, approval, removal, etc.). In the "act of burying a dead person" sense it is now regarded as bury + -al. Burial-ground is from 1803.
1520s, "refusal to grant what is requested or desired;" see deny + -al (2). Replaced earlier denyance (late 15c.). Sense of "act of asserting to the contrary, contradicting" is from 1570s; that of "refusal to accept or acknowledge" is from 1580s. In some 19c. uses, it really means "self-denial." Meaning "unconscious suppression of painful or embarrassing feelings" first attested 1914 in A.A. Brill's translation of Freud's "Psychopathology of Everyday Life"; hence the phrase in denial, popularized 1980s.