An ongoing relationship between (usually two) rivals who compete for superiority.

plural of rivalry

Alternative form of archrivalry

Alternative form of archrivalry

Competition or animosity between siblings in one family.

(economics) A scenario in which there is no competition between one person's consumption of a good or services as it does not prevent others from consuming it as well.

plural of archrivalries

plural of arch-rivalry

plural of sibling rivalry