Word parts assist + -ant Pronunciation (UK) (US) IPA (key): /əˈsɪstənt/ (US) IPA (key): /əˈsɪstɛnt/ Audio (US)(file) Noun Singular assistant Plural assistants (countable) An assistant is a person who helps (or assists) another person. The doctor's assistant held his tools. The assistant guard was in training to become a full guard. Related words assist assistance Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads