maximum is on the Academic Word List. Pronunciation IPA (key): /ˈmæksɪməm/ Audio (UK)(file) Audio (AU)(file) Hyphenation: max‧i‧mum Noun Singular maximum Plural maximums A maximum is the largest or highest value or amount. Antonym: minimum The maximum number of people we can accept is 25. They pay $50 a day up to a maximum of $300 per week.Wikiwand - on Seamless Wikipedia browsing. On steroids.