INSTABLE

Adjective

instable (comparative more instable, superlative most instable)

Exhibiting instability; unstable

Synonyms

• irregular, unsteady; see also unsteady

Anagrams

• blastine

Source: Wiktionary

In*sta"ble, a. Etym: [L. instabilis: cf. F. instable. See In- not, and Stable, a., and cf. Unstable.]

Definition: Not stable; not standing fast or firm; unstable; prone to change or recede from a purpose; mutable; inconstant.

Source: Webster’s Unabridged Dictionary 1913 Edition