Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
good-neighbourliness is a noun meaning "a disposition to be friendly and helpful to neighbors". It carries one recorded sense.
a disposition to be friendly and helpful to neighbors
Definitions, synonyms and semantic relations for good-neighbourliness come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.