Synonyms of the word

deranged

• adj. disturbed or upset, especially mentally.
• adj. insane.
• v. simple past tense and past participle of derange.

crazed

• adj. Maddened; driven insane.
• adj. Covered with cracks (generally applied to porcelain).
• v. simple past tense and past participle of craze.

insane

• adj. Exhibiting unsoundness or disorder of mind; not sane; mad; deranged in mind; delirious; distracted.
• adj. Used by, or appropriated to, insane persons.
• adj. Causing insanity or madness.
• adj. Characterized by insanity or the utmost folly; ridiculous; unpractical.