| verb | derange mentally, throw out of mental balance; make insane “The death of his parents unbalanced him” |
| verb | throw into great confusion or disorder “Fundamental Islamicists threaten to perturb the social order in Algeria and Egypt” |
| unbalance | noun | a state of mental disturbance and disorientation |
| derangement | noun | a state of mental disturbance and disorientation |
| perturbation | noun | a disposition that is confused or nervous and upset |