ERRED is a playable word

err Scrabble® Dictionary

verb
erred, erring, errs
to make a mistake
(adjective) errable
15 Playable Words can be made from "ERRED"
   2-Letter Words (4 found)
   3-Letter Words (5 found)
   4-Letter Words (5 found)
   5-Letter Words (1 found)