1. unstable

adjective. (ənˈsteɪbəl) Lacking stability or fixity or firmness.
Synonyms
temporary tender wobbly volcanic coseismic rocky crank volatile seismic wonky top-heavy unsteady tippy seismal cranky coseismal shaky tipsy rickety impermanent explosive inconstant tottering
Antonyms
steady stable permanent constant hard
Etymology
unstable (English)
stable (English)
stabilis (Latin)
-abilis (Latin)
sto (Latin)
un- (English)
on- (Middle English (1100-1500))
on- (Old English (ca. 450-1100))
ond- (Old English (ca. 450-1100))
un- (Middle English (1100-1500))
un- (Old English (ca. 450-1100))
unus (Latin)
oinos (Latin)
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2. unstable

adjective. (ənˈsteɪbəl) Affording no ease or reassurance.
Synonyms
precarious uneasy
Antonyms
easy tough inedible
Etymology
unstable (English)
stable (English)
stabilis (Latin)
-abilis (Latin)
sto (Latin)
un- (English)
on- (Middle English (1100-1500))
on- (Old English (ca. 450-1100))
ond- (Old English (ca. 450-1100))
un- (Middle English (1100-1500))
un- (Old English (ca. 450-1100))
unus (Latin)
oinos (Latin)

3. unstable

adjective. (ənˈsteɪbəl) Highly or violently reactive.
Synonyms
reactive
Antonyms
unreactive outbid
Etymology
unstable (English)
stable (English)
stabilis (Latin)
-abilis (Latin)
sto (Latin)
un- (English)
on- (Middle English (1100-1500))
on- (Old English (ca. 450-1100))
ond- (Old English (ca. 450-1100))
un- (Middle English (1100-1500))
un- (Old English (ca. 450-1100))
unus (Latin)
oinos (Latin)

4. unstable

adjective. (ənˈsteɪbəl) Disposed to psychological variability.
Synonyms
irresolute
Antonyms
resolute underbid
Etymology
unstable (English)
stable (English)
stabilis (Latin)
-abilis (Latin)
sto (Latin)
un- (English)
on- (Middle English (1100-1500))
on- (Old English (ca. 450-1100))
ond- (Old English (ca. 450-1100))
un- (Middle English (1100-1500))
un- (Old English (ca. 450-1100))
unus (Latin)
oinos (Latin)

5. unstable

adjective. (ənˈsteɪbəl) Subject to change; variable.
Synonyms
fluid changeable changeful
Antonyms
unchangeable impermanence full-time nonworker
Etymology
unstable (English)
stable (English)
stabilis (Latin)
-abilis (Latin)
sto (Latin)
un- (English)
on- (Middle English (1100-1500))
on- (Old English (ca. 450-1100))
ond- (Old English (ca. 450-1100))
un- (Middle English (1100-1500))
un- (Old English (ca. 450-1100))
unus (Latin)
oinos (Latin)

6. unstable

adjective. (ənˈsteɪbəl) Suffering from severe mental illness.
Synonyms
unsound mentally ill insane
Antonyms
sane unloving painless strong
Etymology
unstable (English)
stable (English)
stabilis (Latin)
-abilis (Latin)
sto (Latin)
un- (English)
on- (Middle English (1100-1500))
on- (Old English (ca. 450-1100))
ond- (Old English (ca. 450-1100))
un- (Middle English (1100-1500))
un- (Old English (ca. 450-1100))
unus (Latin)
oinos (Latin)
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