[ did-lee ]
/ ˈdɪd li /
noun, plural did·dlies for 2. Slang.
a thing of little or no value; naught: Your excuses aren't worth diddly to me.
a flaw; malfunction.
Origin of diddly
perhaps euphemistic shortening of diddlyshit
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019