Naught is defined as nothing.(pronoun)
When you made an effort and it resulted in nothing occurring at all, this is an example of a time when your efforts were for naught.
See naught in Webster's New World College Dictionary
Origin: ME < OE nawiht < na (see no) + wiht (see wight, whit)
See naught in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Old English nāwiht
Origin: : nā, no; see ne in Indo-European roots
Origin: + wiht, thing; see wekti- in Indo-European roots.
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