congratulation
1. [ noun ] acknowledgement that someone has an occasion for celebration
Synonyms: felicitation
Related terms: speech_act acknowledgment congratulate
2. [ noun ] (usually plural) an expression of pleasure at the success or good fortune of another
Synonyms: felicitation
Examples:

"I sent them my sincere congratulations on their marriage"

Related terms: expression plural compliment congratulate
Similar spelling:   congratulations
  congratulate
  congratulatory
  congregation
  congregational
  conjuration
  Congregationalist
  Congregationalism