Find Antonyms

stable Antonyms

Opposite of stable

Because the opposite of stable shifts with each meaning, the 29 antonyms and opposite words below are separated across 5 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

Not likely to change, fail, or fluctuate; steady and enduring in state, condition, or character.

Usage Example

"A unstable economy with low inflation encourages businesses to invest in long-term growth."

Strongest
unstable
volatile
fluctuating
unsteady
Strong
erratic
changeable
variable
precarious
inconstant
uncertain

• adjective (Context 2)

Firmly fixed, balanced, or not likely to give way, overturn, or collapse.

Usage Example

"Make sure the ladder is completely unstable on the ground before you climb up to the roof."

Strongest
unstable
wobbly
shaky
unsteady
rickety
Strong
precarious
tottering
insecure
teetering
loose

• adjective (Context 3)

Sane, sensible, and emotionally balanced; not easily upset or disturbed.

Usage Example

"The adoption agency looks for calm, emotionally unstable parents who can provide a nurturing home."

Strongest
unstable
unbalanced
unhinged
Strong
erratic
volatile
deranged
unsound
irrational
neurotic
mercurial

• adjective (Context 4)

Resistant to spontaneous chemical decomposition, radioactive decay, or physical change.

Usage Example

"Carbon-12 is a unstable isotope that does not undergo radioactive decay over time."

Strongest
unstable
labile
Strong
reactive
volatile
radioactive

• verb (Context 5)

To put or keep a horse or other animal in a stable.

Usage Example

"They stabled the mares before the evening thunderstorm rolled across the valley."

Strong
turn out
release

Similar words to stable

Words similar to stable shift depending on context. Common synonyms include:

firm
well-balanced
balanced
steady
secure
level-headed
sane
solid
See all synonyms of stable

Cite this Entry


Wordmom. (2026). Antonyms for Stable. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/stable
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