derange
1. [ verb ] derange mentally, throw out of mental balance; make insane
Synonyms: unbalance
Examples:

"The death of his parents unbalanced him"

Related terms: madden derangement
2. [ verb ] throw into great confusion or disorder
Synonyms: throw_out_of_kilter perturb
Examples:

"Fundamental Islamicists threaten to perturb the social order in Algeria and Egypt"

Related terms: disorder upset
Similar spelling:   deranged
  derringer
  Deering
  Dearing
  dearness
  Dering
  Dearmas