YESSIR is a playable word

yessir Scrabble® Dictionary

interjection
— used to express assent
30 Playable Words can be made from "YESSIR"
   2-Letter Words (6 found)
   3-Letter Words (12 found)
   4-Letter Words (9 found)
   5-Letter Words (2 found)
   6-Letter Words (1 found)