The Collaborative International Dictionary
Gratulate
Gratulate \Grat"u*late\, a. Worthy of gratulation. [Obs.]
There's more behind that is more gratulate.
--Shak.
Gratulate
Gratulate \Grat"u*late\, v. t. [imp. & p. p. Grqatulated; p. pr. & vb. n. Gratulating.] [L. gratulatus, p. p. of gratulari to congratulate, fr. gratus pleasing, agreeable. See Grate,
] To salute with declaration of joy; to congratulate. [R.]
--Shak.
Douglas Harper's Etymology Dictionary
gratulate
archaic, 1550s, from Latin gratulatus, past participle of gratulari (see gratulation).
Wiktionary
gratulate
(context obsolete English) Worthy of gratulation. v
1 (context archaic English) to congratulate 2 (context archaic English) to greet, welcome, salute