Not certain or determined in respect of occurrence; dependent on chance or accident.

Occurring or coming at uncertain times; not to be calculated on, uncertain, unsettled.

Dependent on chance or accident; lacking any obvious principle of organization; random, characterized by haphazard.

Made or held on the basis of incomplete information; conjectural. Cf. rove, v.2 3a. Obsolete.

Of the nature of the game of hazard; dependent on chance.

Dependent on chance; casual, accidental. archaic.

Unsteady, shifting.

Having no definite aim or purpose; not sent or guided in a particular direction; made, done, occurring, etc., without method or conscious choice…

Acting or happening at random; fortuitous, casual, haphazard. Obsolete.

Dependent on uncertain events or occurrences; haphazard, random. Cf. aleatoric, adj.

Subject to or at the mercy of accidents; liable to chance and change.

Exempt from law; not subject to or conforming to law or laws.

attributive (with hyphens). Incidental, casual; made or done in passing or en route. Originally and chiefly with reference to a remark or comment…

Liable to chance or sudden change, uncertain, ‘casual’, risky, untrustworthy. colloquial or dialect.

Uncertain; favouring unexpected results.

Random, haphazard.

Dependent on chance. rare.

Characterized by or resulting from chance or luck; random, haphazard.

Characterized by or resulting from chance or luck; haphazard, random; coincidental.

Unplanned, haphazard, random.