IPA: /ɡrəˈtʃuːləˌtɔːri/
KK: /grəˈtʃuːləˌtɔːri/
Relating to or expressing congratulations.
She received a gratulatory message for her achievement.
Gratulatory → It is formed from "gratus" (meaning pleasing or thankful) and the suffix "-ory" (meaning relating to or characterized by). The word "gratulatory" refers to something that is characterized by expressing pleasure or thanks, especially in the context of congratulations.
Think of 'gratus' meaning pleasing or thankful, which helps you remember that 'gratulatory' relates to expressing thanks or congratulations.