unstable

1. Lacking stability or fixity or firmness (synset 302299575)
   "unstable political conditions"; "the tower proved to be unstable in the high wind"; "an unstable world economy"
   also:

   • inconstant - likely to change frequently often without apparent or cogent reason; variable
   • impermanent, temporary - not permanent; not lasting
   • unsteady - subject to change or variation
   similar to:

   • coseismal, coseismic - being where earthquake waves arrive simultaneously
   • crank, cranky, tender, tippy - (used of boats) inclined to heel over easily under sail
   • explosive, volatile - liable to lead to sudden change or violence
   • rickety, shaky, wobbly, wonky - inclined to shake as from weakness or defect
   • rocky - liable to rock
   • seismal, seismic - subject to or caused by an earthquake or earth vibration
   • tipsy - unstable and prone to tip as if intoxicated
   • top-heavy - unstable by being overloaded at the top
   • tottering - (of structures or institutions) having lost stability; failing or on the point of collapse
   • volcanic - explosively unstable
2. Highly or violently reactive (synset 301935855)
   "sensitive and highly unstable compounds"
   similar to: reactive - participating readily in reactions
3. Affording no ease or reassurance (synset 300826760)
   "a precarious truce"
   similar to: uneasy - lacking a sense of security or affording no ease or reassurance
   same as: precarious
4. Suffering from severe mental illness (synset 302083947)
   "of unsound mind"
   similar to: insane - afflicted with or characteristic of mental derangement
   same as: mentally ill, unsound
5. Disposed to psychological variability (synset 301999794)
   "his rather unstable religious convictions"
   similar to: irresolute - uncertain how to act or proceed
6. Subject to change;
   Variable (synset 300346411)
   "a fluid situation fraught with uncertainty"; "everything was unstable following the coup"
   similar to: changeable, changeful - such that alteration is possible; having a marked tendency to change
   same as: fluid

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