fuddle-duddle exclamation 1verb 1forms 4 exclamation1 •(euphemistic) Fuck! Fuck off!What is the nature of your thoughts, gentlemen, when you say “fuddle duddle” or something like that? — 1971 verb1 •To depart, to be off. formsfuddle-duddled · fuddle-duddling · fuddle duddles · fuddle-duddles