NEIGHBORLY
neighborly, neighbourly
(adjective) exhibiting the qualities expected in a friendly neighbor
Source: WordNet® 3.1
Etymology
Adjective
neighborly (comparative neighborlier, superlative neighborliest)
American standard spelling of neighbourly.
He's very neighborly: he always collects my mail when I'm away on vacation.
Source: Wiktionary
Neigh"bor*ly, a. Etym: [Also written neighbourly.]
Definition: Apropriate to the relation of neighbors; having frequent or
familiar intercourse; kind; civil; social; friendly.
– adv.
Definition: In a neigborly manner.
Judge if this be neighborly dealing. Arbuthnot.
Source: Webster’s Unabridged Dictionary 1913 Edition