fud in English dictionary fud Meanings and definitions of "fud" alternative capitalization of FUD noun Alternative letter-case form of [i]FUD[/i] more Grammar and declension of fud fud ( uncountable) fud (uncountable) more FUD Meanings and definitions of "fud" Acronym (derogatory) Fear, uncertainty, and doubt, a marketing strategy involving the spread of worrisome information about a competing product. more Sample sentences with "fud" Declension Stem Try again Available translations Cornish Czech Estonian German Turkish Authors