noun
next-door neighbour; neighbor
Polite, friendly term for a next-door neighbour. Often used in casual conversation when referring to the person living next door.
See also: 隣
お隣さんからおすそ分けをいただいた。
I received some food from my next-door neighbour.
お隣さんはとても親切な方です。
My next-door neighbour is a very kind person.
隣 is a neutral noun meaning 'next door' or 'neighbouring house'. お隣さん is a polite, personified form referring specifically to the neighbour as a person.
隣人 is a more formal or literary term for 'neighbour', while お隣さん is casual and friendly.
Formed from 隣 (となり, 'next door') with the honorific prefix お and the polite suffix さん, creating a friendly, personified term for a neighbour.