con ‧ grat ‧ u ‧ la ‧ tion S3 /kənˌɡrætʃəˈleɪʃ ə n, kənˌɡrætʃʊˈleɪʃ ə n/ BrE AmE noun
1 . congratulations
a) used when you want to congratulate someone:
‘I’ve just passed my driving test!’ ‘Congratulations!’
congratulations on
Congratulations on a superb performance!
b) words saying you are happy that someone has achieved something:
Give Oscar my congratulations.
2 . [uncountable] when you tell someone that you are happy because they have achieved something or because something nice has happened to them:
letters of congratulation