daff

/dæf/
verb
  1. To play or fool around; to act in a silly or playful manner.
    • Stop daffing and get back to your homework.
    • The children daffed in the yard, chasing each other with laughter.
    • He was daffing with his friends instead of paying attention in class.
Synonyms
noun
  1. A silly or foolish person.
    • He's a bit of a daff, but he means well.
    • Don't be such a daff; you know that plan won't work.
    • Only a daff would try to skate on thin ice.
Synonyms
What does "daff" mean? | whatsthatwordmean | whatsthatwordmean