'Sanity' definitions:

Definition of 'sanity'

From: WordNet
noun
Normal or sound powers of mind [syn: sanity, saneness] [ant: insanity]

Definition of 'Sanity'

From: GCIDE
  • 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]

Synonyms of 'sanity'

From: Moby Thesaurus