Definition of belongingness in US English:

belongingness

noun

  • The state or feeling of belonging to a particular group.

    ‘disruptions in social relationships evoke threats to children's sense of belongingness’
    ‘most saw their beliefs as a hallmark of belongingness to their community’

Pronunciation

belongingness

/bəˈlɔŋɪŋnəs//bəˈlôNGiNGnəs/