sane
UK[seɪn]US[seɪn]
adj
Having a normal and healthy mind; not mentally ill.
adj
Showing good judgment and reasonable thinking.
Morpheme Breakdown
san
e
san
healthy
e
adjective suffix
Etymology
The word 'sane' entered English in the early 17th century, directly from the Latin adjective 'sanus', which meant 'healthy, sound, sane'. This Latin term is believed to derive from the Proto-Indo-European root swen-, meaning 'to sound, resound', which also gave rise to words like 'sound' in the sense of being in good condition. The semantic journey shifted from the general physical state of being 'healthy' to the specific mental state of being 'sound of mind'. The logic of the word's formation is direct, combining the root for 'healthy' with a standard adjectival ending to describe a person whose mental faculties are intact and functioning properly.
Analysis
Structure: san (healthy) + e (adjective suffix)
'san' originates from Latin 'sanus', meaning 'healthy, sound'. The final 'e' is a common adjectival suffix in English.
Examples
The court judged him to be sane and therefore legally responsible for his actions.
After a period of rest, she returned to work feeling much more sane and focused.
It was the only sane decision to make in such a chaotic situation.