adj. mentally healthy; free from mental disorder; "appears to be completely sane"

adj. showing reason or sound judgment; "a sensible choice"; "a sensible person"

adj. being in a state of proper balance or equilibrium; "the carefully balanced seesaw"; "a properly balanced symphony orchestra"; "a balanced assessment of intellectual and cultural history"; "a balanced blend of whiskeys"; "the educated man shows a balanced development of all his powers"

adj. exercising or showing good judgment; "healthy scepticism"; "a healthy fear of rattlesnakes"; "the healthy attitude of French laws"; "healthy relations between labor and management"; "an intelligent solution"; "a sound approach to the problem"; "sound advice"; "no sound explanation for his decision"

adj. financially secure and safe; "sound investments"; "a sound economy"

adj. maintaining equilibrium

adj. capable of being believed; "completely credible testimony"; "credible information"

adj. consistent with or based on or using reason; "rational behavior"; "a process of rational inference"; "rational thought"

adj. afflicted with or characteristic of mental derangement; "was declared insane"; "insane laughter"

adj. in a murderous frenzy as if possessed by a demon; "the soldier was completely amuck"; "berserk with grief"; "a berserk worker smashing windows"

adj. affected with madness or insanity; "a man who had gone mad"

adj. driven insane

adj. not consistent with or using reason; "irrational fears"; "irrational animals"

adj. insane and believed to be affected by the phases of the moon

adj. wildly disordered; "a maniacal frenzy"

adj. characteristic of or suffering from psychosis

adj. not behaving normally

adj. talking or behaving irrationally; "a raving lunatic"

adj. extremely evil or cruel; expressive of cruelty or befitting hell; "something demonic in him--something that could be cruel"; "fires lit up a diabolic scene"; "diabolical sorcerers under the influence of devils"; "a fiendish despot"; "hellish torture"; "infernal instruments of war"; "satanic cruelty"; "unholy grimaces"