DUNS is a playable word

dun Scrabble® Dictionary

adjective
dunner, dunnest
of a dull brown color
verb
dunned, dunning, duns
to make demands upon for payment of a debt
8 Playable Words can be made from "DUNS"
   2-Letter Words (3 found)
   3-Letter Words (4 found)
   4-Letter Words (1 found)