Jubilate
Jubilate , noun
[Latin, imperat. of jubilare to shout for joy.]
1.
The third Sunday after Easter; -- so called because the introit is the 66th Psalm, which, in the Latin version, begins with the words, “Jubilate Deo.”
2.
A name of the 100th Psalm; -- so called from its opening word in the Latin version.
Jubilate , intransitive verb
[Latin jubilatus, p. p. of jubilare.]
To exult; to rejoice. [Rare] — De Quincey