There is no 4-letter word that is a form of “belonging” in the English language.
However, there are a few 4-letter words that are related to “belonging” in some way, such as:
- Kith: One’s kin or relatives.
- Kin: One’s relatives or kindred.
- Clan: A group of people united by kinship, race, or tradition.
- Tribe: A social group of people related by blood or culture.
I hope this helps!