v.
1. intr. feel great joy.
2 intr. (foll. by that + clause or to + infin.) be glad.
3 intr. (foll. by in, at) take delight.
4 intr. celebrate some event.
5 tr. cause joy to.
Derivatives:
rejoicer n. rejoicingly adv.
Etymology: ME f. OF rejoir rejoiss- (as RE-, JOY)