sanity

sanity
    n 1: normal or sound powers of mind [syn: {sanity}, {saneness}]
         [ant: {insanity}]
    

Sanity \San"i*ty\, n. [L. sanitas, from sanus sound, healthy.
   See {Sane}.]
   The condition or quality of being sane; soundness of health
   of body or mind, especially of the mind; saneness.
   [1913 Webster]
    

SANITY, med. jur. The state of a person who has a sound understanding; the 
reverse of insanity. 
     2. The sanity of an individual is always presumed. 5 John. R. 144; 1 
Pet. R. 163; 1 Hen. & M. 476; 4. Cowen, R. 207; 4 W. C. C. R. 262. See 9 
Conn. 102; 9 Mass. 225; 3 Mass. 336 1 Mass. 71; 8 Mass. 371; 8 Greenl. 42; 
15 John. 503; 4 Pick. 32. 
    

63 Moby Thesaurus words for "sanity":
      IQ, apprehension, balance, caliber, capacity, common sense,
      comprehension, conception, cool head, coolheadedness, coolness,
      deductive power, due sense of, esemplastic power, good sense,
      horse sense, ideation, integrative power, intellect,
      intellectual grasp, intellectual power, intellectualism,
      intellectuality, intelligence, intelligence quotient, knowledge,
      level head, levelheadedness, lucidity, marbles, mental age,
      mental capacity, mental grasp, mental health, mental ratio,
      mentality, mind, mother wit, native wit, normality, plain sense,
      power of mind, practical mind, practical wisdom, practicality,
      rationality, reason, reasonableness, reasoning power, saneness,
      scope of mind, sense, senses, sensibleness, sober-mindedness,
      soberness, sobriety, sound mind, soundness, stability,
      thinking power, understanding, wit