1.
hermit; recluse; person who has renounced the world
A person who has withdrawn from society and worldly concerns. Can refer to historical hermits, monks, or modern people who live in isolation by choice.
Usage
Literally "person who has abandoned the world" (世 = the world + 捨てる = to abandon + 人 = person). Has a literary, somewhat romantic nuance. Often used metaphorically rather than literally — describing someone who lives very simply or avoids social engagement.
Note: In Japanese literary tradition, there are famous 世捨て人 such as the poet 鴨長明, author of 方丈記.