Word family (noun) custom customer customs (adjective) customary custom customizable accustomed (verb) accustom customize (adverb) customarily From Longman Dictionary of Present-day EnglishRelated subject areas: Tradecustomcus‧tom1 /ˈkʌstəm/ ●●● W3 noun    one [countable, uncountable]Custom something which is done by folks in a specifi