Synonyms of unpredictable

unpredictable

adjective

ˌən-pri-ˈdik-tə-bəl 

as in volatile

likely to change frequently, suddenly, or unexpectedly

unpredictable spring weather that makes it really hard to know what to wear

Synonyms & Similar Words

• volatile
• unstable
• changeful
• inconsistent
• uncertain
• variable
• capricious
• unsettled
• changeable
• mercurial
• mutable
• inconstant
• fickle
• fluctuating
• temperamental
• erratic
• unsteady
• random
• unreliable
• fluid
• haphazard
• up in the air
• skittish
• arbitrary
• shaky
• flickery
• aimless
• scattered
• ambivalent
• slapdash
• untrustworthy
• undependable
• hit-or-miss
• stray
• irregular
• dicey
• desultory
• versatile
• adaptable
• protean
• vacillating
• mobile
• wavering
• hesitating
• shilly-shallying
• shilly-shally

Antonyms & Near Antonyms

• predictable
• certain
• constant
• stable
• steady
• unchanging
• unchangeable
• invariable
• stationary
• immutable
• uniform
• settled
• even
• unvarying
• permanent
• persistent
• changeless
• durable
• lasting
• reliable
• equable
• abiding
• dependable
• sure
• true
• trustworthy
• trusty
• tried
• tried-and-true

Example Sentences

Recent Examples of unpredictable

Overall, political observers see the episode as an example of how the president’s political strategy can be unpredictable at a time when Republicans are trying to control the message the most. — Ana Ceballos, Los Angeles Times, 6 Oct. 2026

Season one coming out — even just knowing that there was going to be a show and then it getting announced — all of that was exciting and wild and unpredictable. — Nicole Fell, HollywoodReporter, 4 Oct. 2026

Advertisement Since polling hours and conditions vary by county, and even within a county, wait times can be unpredictable. — Time Staff, Time, 3 Oct. 2026

The versatile multi-genre jam band from Virginia continues to be unpredictable, funny and fresh in its live shows. — Christopher Arnott, Hartford Courant, 3 Oct. 2026