Predictable

Antonyms of PREDICTABLE

capricious, avoidable, deceptive, inestimable, episodic, improbable, unforeseen, irresponsible, unpredictable, aleatory, untrustworthy, unforeseeable, avertible, original, unreliable, freakish, uncomputable, evitable, occasional, incalculable, avertable, unexpected.