gratulate
verb
grat·u·late ˈgra-chə-ˌlāt 
gratulated; gratulating; gratulates
transitive verb
archaic
: congratulate
gratulation
ˌgra-chə-ˈlā-shən
noun gratulatory
ˈgra-chə-lə-ˌtȯr-ē
adjective 
Word History
Etymology
Latin gratulatus, past participle of gratulari — more at congratulate
First Known Use
1566, in the meaning defined above