낫다

Etymology
which is the only occurrence of it in the 15th century. In the 16th century, it appears as with a low~rising alternating tone.

Presumed original sense: "to get better" as a verb, splitting into a general adjective and a more semantically specific verb in modern usage. Compare, which this verb partially replaced.

Verb

 * 1)  to recover from an illness, to get better

Adjective

 * 1) better (than something); superior