congratulation
con·gratu·la·tion [congratulation congratulations] [kənˌɡrætʃuˈleɪʃn] [kənˌɡrætʃuˈleɪʃn] noun
1. congratulations plural a message congratulating sb (= saying that you are happy about their good luck or success)
• to offer/send your congratulations to sb
2. Congratulations! used when you want to congratulate sb
• ‘We're getting married!’ ‘Congratulations!’
• Congratulations on your exam results!
3. uncountable the act of congratulating sb
• a letter of congratulation
Word Origin:
late Middle English: from Latin congratulatio(n-), from the verb congratulari, from con- ‘with’ + gratulari ‘show joy’ (from gratus ‘pleasing’).