Entry 4 senses · 4 variants Webster, 1913 Daff /(dȧf)/ · IPA /dæf/ v. t. n. v. i. v. t. 01 v. t. To cast aside; to put off; to doff. 1. To cast aside; to put off; to doff.[Obs.] “Canst thou so daff me? Thou hast killed my child.” — Shak. 02 n. A stupid, blockish fellow; a numskull. 1. A stupid, blockish fellow; a numskull.[Obs.] 03 v. i. To act foolishly; to be foolish or sportive; to toy. 1. To act foolishly; to be foolish or sportive; to toy.[Scot.] 04 v. t. To daunt. 1. To daunt.[Prov. Eng.]