Synonyms:
unstable
Meaning: lacking stability or fixity or firmness; "unstable political conditions"; "the tower proved to be unstable in the high wind"; "an unstable world economy"
Synonyms:
unstable
Meaning: highly or violently reactive; "sensitive and highly unstable compounds"
Synonyms:
precarious, unstable
Meaning: affording no ease or reassurance; "a precarious truce"
Usage examples
A weak will is unstable as water.
Something went wrong with the unstable stuff,--and you know the rest.'
But they are unstable, and cannot go on thus: they must either separate or collapse.
The Venetian, Dominic of Treviso, was quite right; Louis XII. was "of unstable mind, saying yes and no." On such characters discouragement tells rapidly.
Remember this, as a natural result of a three-hour day, which corresponds to an unstable state of things; remember also that in some past epoch a three-hour day is a probability.