congratulation
/kənˌgræʧəˈleɪʃən/ /kənˌgræʤəˈleɪʃən/
noun
plural -tions
congratulations [plural]
a message telling someone that you are happy because of his or her success or good luck :words that congratulate someone
b - used to tell someone that you are happy because of his or her success or good luck
formal :the act of telling someone that you are happy because of his or her success or good luck :the act of congratulating someone [plural]