Synonyms of mutable

mutable

adjective

ˈmyü-tə-bəl 

as in volatile

likely to change frequently, suddenly, or unexpectedly

a politician with very mutable positions on all the issues

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

Example Sentences

Recent Examples of mutable

These 10 songs represent her ideal playground, a space bright and broad enough for her dreamlike visions and mutable voice to take whatever shapes her imagination allows. — Jayson Greene, Pitchfork, 8 May 2026

Spring and summer bring a dramatic personal reset as Venus, Uranus and Mars move through your mutable territory. — Valerie Mesa, PEOPLE, 1 Jan. 2026

The obstacles are mutable and insidious. — Kevin Rennie, Hartford Courant, 7 Mar. 2026

Warm, ashen, and almost preternaturally glossy, consider the pop star's interpretation a blueprint for the mutable color trend. — Calin Van Paris, InStyle, 3 Mar. 2026