UNBALANCE

imbalance, instability, unbalance

(noun) a lack of balance or state of disequilibrium; “a hormonal imbalance”

derangement, mental unsoundness, unbalance

(noun) a state of mental disturbance and disorientation

unbalance, derange

(verb) derange mentally, throw out of mental balance; make insane; “The death of his parents unbalanced him”

unbalance

(verb) throw out of balance or equilibrium; “The tax relief unbalanced the budget”; “The prima donna unbalances the smooth work in our department”

Source: WordNet® 3.1

Etymology

Verb

unbalance (third-person singular simple present unbalances, present participle unbalancing, simple past and past participle unbalanced)

(transitive) To cause to be out of balance.

Source: Wiktionary