Congratulate = Give (someone) one's good wishes when something special or pleasant has happened to them; Praise (someone) for a particular achievement.
Synonyms: confidence, assurance, aplomb, self-confidence, self-possession.
Example – We should congratulate everybody involved in the project.
Usage in Sentence: Congratulate on, not for.
Don’t say: I congratulate you for your success.
ü Say: I congratulate you on your success.