diddly

(did)

noun

anything at all or of any consequence: doesn't know diddly about computers

adjective

worthless, mediocre, etc.
Also sp. diddley

See diddly in American Heritage Dictionary 4

noun
Slang
A small or worthless amount: His advice wasn't worth diddly to me.

Origin:

Origin: Short for diddlyshit; see diddly-squat 

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