What's the difference between unneighborly and unneighbourly?

Unneighborly

Definition:

(a.) Not neighborly; distant; reserved; solitary; exclusive.
(adv.) Not in a neighborly manner.

Example Sentences:

Unneighbourly

Definition:

Example Sentences:

Words possibly related to "unneighborly"

Words possibly related to "unneighbourly"