He hasn't done diddly all day A thing of little or no value See examples of diddly used in a sentence. Slang a small or worthless amount His advice wasn't worth diddly to me American heritage® dictionary of the english language, fifth edition.
Meanings, etymology, pronunciation and more in the oxford english dictionary They head down the mountain, back to base camp, and when they get there they don't say diddly Not a word, like they're deaf and dumb Definition of diddly noun in oxford advanced american dictionary Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. A small or worthless amount.
