darn UK /dɑːn/US /dɑɹn/exclamation 1adjective 1adverb 1noun 2verb 2forms 4phrases 1 exclamation1 •(euphemistic) an expression of anger about something that has gone wrong adjective1 •(euphemistic) Damn. adverb1 •(euphemistic) Damned.But I ain't up to my baby tonight / 'Cause it's too darn hot — 1948 noun2 •(euphemistic) Damn.His opinion isn't worth a darn. •A place mended by darning. verb2 •(euphemistic) Damn. •To repair by stitching with thread or yarn, particularly by using a needle to construct a weave across a damaged area of fabric.I need to darn these socks again. formsdarned · darning · darneth · darns Phrases with darn darn tootin'Absolutely correct; speaking the truth.