IPA: /kənˈɡrætʃʊleɪtə/
KK: /kənˈɡrætʃʊleɪtər/
A person who expresses joy or praise to someone for their achievements or good fortune.
At the party, everyone was a congratulator, celebrating the bride and groom's special day.
Congratulator → It is formed from "con-" (meaning together) and "gratulor" (meaning to rejoice or express joy). The word "congratulator" refers to someone who expresses joy together with others, typically in celebration of an achievement or good fortune.
Think of someone who is 'together' ('con-') with you in 'rejoicing' ('gratulor') — that's why a congratulator is someone who shares in your joy.