congratulation

英 [kəngrætjʊ'leɪʃ(ə)n] 美[kən,ɡrætʃu'leʃən]

• n. 祝贺；贺辞

1. the act of acknowledging that someone has an occasion for celebration

2. (usually plural) an expression of pleasure at the success or good fortune of another;

"I sent them my sincere congratulations on their marriage"