The Daily Word: Aleatory Definition: (adjective) Dependent on uncertain events or occurrences; haphazard, random. Cf. aleatoric, adj. Etymology: A borrowing from Latin. Etymon: Latin āleātōrius. classical Latin āleātōrius belonging to or connected with gamblers or games of chance āleātor gambler, dice-player ( ālea die, dice, of unknown origin; probably a loanword ‑ātor ‑ator suffix) ‑ius, suffix forming adjectives. Compare French aléatoire (1596 in a legal context in Middle French as aleatoire,