congratulation

con‧grat‧u‧la‧tion S3 /kənˌɡrætʃəˈleɪʃən, kənˌɡrætʃʊˈleɪʃən/ 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

Oxford Advanced Learner's Dictionary

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’).

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition

congratulation / kənˌɡræt.jʊˈleɪ.ʃ ə n / noun

congratulations [ plural ] A2 something that you say when you want to congratulate someone:

"I passed my driving test yesterday." "Did you? Congratulations!"

Congratulations on your engagement!

[ U ] the act of congratulating someone:

He sent her a note of congratulation on her election victory.

Merriam-Webster's Advanced Learner's Dictionary

con·grat·u·la·tion /kənˌgræʧəˈleɪʃən, kənˌgræʤəˈleɪʃən/ noun, pl -tions
1 congratulations [plural]
a : a message telling someone that you are happy because of his or her success or good luck : words that congratulate someone
• Let me offer you my congratulations for/on being elected.
• Please send her my congratulations.
b
- used to tell someone that you are happy because of his or her success or good luck
• “I got promoted!” “Congratulations!”
- often + on
• Congratulations on your promotion!
• Congratulations on a job well done.
2 formal : the act of telling someone that you are happy because of his or her success or good luck : the act of congratulating someone