1. [ noun ] (psychology,psychiatry) a state of mental disturbance and disorientation
Synonyms: unbalance mental_unsoundness
Related terms: insanity unbalance
2. [ noun ] the act of disturbing the mind or body
Synonyms: upset overthrow

"his carelessness could have caused an ecological upset" "she was unprepared for this sudden overthrow of their normal way of living"

Related terms: disturbance perturb
Similar spelling:   deranged