Unpredictable
Synonyms: Erratic, Variable, Inconsistent, Capricious, Spontaneous, Fickle, Random, Tumultuous, Irregular, Hazardous, Uncertain, Changeable, Whimsical, Impulsive, Unreliable, Mercurial, Fluctuating, Volatile, Chaotic, and Unforeseen.
Example Sentences
Weather can be very unpredictable sometimes.
His moods are often unpredictable and confusing.
Life events can be unpredictable and surprising.
Unpredictable changes can disrupt our plans.