Dictionary Check: unpredictable

"unpredictable" is a valid word!

Scrabble 20 points
Words with Friends 26 points

Definition

adjective

not capable of being foretold

Antonyms:
adjective

unknown in advance

Example: "an unpredictable (or indeterminable) future"
adjective

not occurring at a regular rate or fixed intervals

Example: "an irregular heartbeat"
Synonyms:

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