MISSTAMPED is a playable word

misstamp Scrabble® Dictionary

verb
misstamped, misstamping, misstamps
to stamp wrongly
495 Playable Words can be made from "MISSTAMPED"
   2-Letter Words (26 found)
   3-Letter Words (81 found)
   9-Letter Words (1 found)
   10-Letter Words (1 found)