| Causeless 1. (a.) 1. Self-originating; uncreated. 2. (a.) Without just or sufficient reason; groundless. 3. (adv.) Without cause or reason. Thesaurus Entries accidental, adventitious, aimless, aleatory, casual, chance, chancy, contingent, designless, destinal, dicey, driftless, dysteleological, fatal, fatidic, fluky, fortuitous, haphazard, iffy, incidental, indeterminate, indiscriminate, inexplicable, mindless, promiscuous, purposeless, random, risky, stochastic, stray, unaccountable, uncaused, undetermined, undirected, unexpected, unforeseeable, unforeseen, unlooked-for, unmotivated, unpredictable |