IPA: /əˈfɪʃieɪt/
KK: /əˈfɪʃiˌeɪt/
To carry out the responsibilities of a position, especially in a formal or official capacity, such as leading a ceremony or overseeing a game.
The judge will officiate the wedding ceremony this weekend.
Past: officiated
Past Participle: officiated
To perform a duty or function in an official capacity, such as leading a ceremony or overseeing a game.
The judge will officiate the wedding ceremony this Saturday.
Past: officiated
Past Participle: officiated
Officiate → It is formed from "officium" (meaning duty or service) and the suffix "-ate" (indicating to perform or to make). The word "officiate" means to perform a duty or service, especially in a formal or official capacity.
Think of someone performing a 'duty' ('officium') — that's what officiate means, to carry out a formal service.
No commonly confused words.