congratulant

[kuh n-grach-uh-luh nt or, often, -graj-, kuh ng-]

adjective

expressing or conveying congratulation.

noun

a person who congratulates.

Origin of congratulant

1660–70; < Latin congrātulānt- (stem of congrātulāns, present participle of congrātulārī), equivalent to con- con- + grātul- (grāt-, stem of grātus pleasing + -ul- adj. suffix) + -ant- -ant