Daff

//dæf// noun, verb, slang

noun, verb, slang ·Moderate ·College level

Definitions

Noun
  1. 1
    A fool; an idiot; a blockhead.
  2. 2
    Clipping of daffodil. British, abbreviation, alt-of, clipping, informal

    "Get your daffs here - £2 a bunch."

  3. 3
    Alternative form of daf (“type of drum”). alt-of, alternative

    "Thus, there is considerable debate going on among Chaush whether performing daff music is in accordance with Islamic law or not,"

  4. 4
    A preparation of gypsum once used to adulterate food products. obsolete, uncountable
Verb
  1. 1
    To be foolish; make sport; play; toy. Scotland, intransitive

    "We'll hauld our court mid the roaring lins, And daff in the lashan' tide"

  2. 2
    To toss (aside); to dismiss. transitive

    "DON PEDRO. I would she had bestowed this dotage on me; I would have daffed all other respects and made her half myself."

  3. 3
    To daunt. UK, dialectal, obsolete

    "Young Tam came up and eyed me quick With reddened cheek—Braw Tam was daffed like a chick—He could na speak—Ah Marie they are all gane hame"

  4. 4
    To turn (someone) aside; divert. transitive

Example

More examples

"We'll hauld our court mid the roaring lins, And daff in the lashan' tide"

Etymology

Etymology 1

From Middle English daf, daffe (“fool, idiot”), from Old Norse daufr (“deaf, stupid”), from Proto-Germanic *daubaz (“deaf, stunned”), from Proto-Indo-European *dʰewbʰ- (“to whisk, whirl, smoke, be obscure”). Doublet of deaf, dof, and dowf. Cognate with Swedish döv (“deaf”), Danish døv (“deaf, stupid”). More at deaf.

Etymology 2

From Middle English daffen (“to render foolish”), from daf, daffe (“fool, idiot”). See above.

Etymology 3

Variant of doff.

Etymology 4

From daffodil.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.