noun
( -s )
Etymology: Middle English rejoising, from gerund of rejoisen to rejoice
1.
a. : the action of one that rejoices : the feeling and expression of joy
sounds of rejoicing from the distant camp — T.B.Macaulay
b. : an instance, occasion, or expression of joy : festivity
2. obsolete : something that causes one to rejoice : an occasion of joy or gladness
thy testimonies … are the rejoicing of my heart — Ps 119:111 (Authorized Version)