unpredictable

[uhn-pri-dik-tuh-buhl] / ˌʌn prɪˈdɪk tə bəl /

ADJECTIVE

changeable

Synonyms

STRONGEST

erratic fickle uncertain unreliable unstable

WEAK

capricious chance chancy dicey doubtful fluctuating fluky from left field hanging by a thread iffy incalculable inconstant random touch and go touchy unforeseeable up for grabs variable whimsical

Antonyms

STRONGEST

certain definite reliable stable steady sure unchanging

WEAK

constant predictable unvarying

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“Markets are very uncomfortable, uncertain, volatile and unpredictable.”

From The Wall Street Journal

That is to say, “I Love Boosters” is, above all else, wild, rollicking and unpredictable.

From Los Angeles Times

Following a fortnight off, Scotland's top flight returns with gameweek 30 of a season as unpredictable as it is enthralling.

From BBC

In the real world, of course, markets are unpredictable.

From MarketWatch

Although access does sometimes come back, it is unpredictable and usually for short periods.

From BBC