-fyPronunciation: /fʌɪ/Definition of -fy suffix 1(added to nouns) forming verbs denoting making or producing:speechify denoting transformation or the process of making into:deify petrify 2forming verbs denoting the making of a state defined by an adjective:amplify falsify 3forming verbs expressing a causative sense:horrifyOrigin:from French -fier, from Latin -ficare, -facere, from facere 'do, make'-fy in other Oxford dictionaries Definition of -fy in the US English dictionary