[ˈsanɪti], (Noun)

Definitions:
- reasonable and sensible behaviour or thinking
(e.g: the next few years saw several appeals for sanity from top scientists)

- the ability to think and behave in a way considered to be normal and rational
(e.g: I began to doubt my own sanity)


Phrases:

Origin:
late Middle English (in the sense ‘health’): from Latin sanitas ‘health’, from sanus ‘healthy’. Current senses date from the early 17th century