CONKER is a playable word

conker Scrabble® Dictionary

noun
pl. conkers
a chestnut used in a British game
46 Playable Words can be made from "CONKER"
   2-Letter Words (9 found)
   3-Letter Words (15 found)
   4-Letter Words (16 found)
   5-Letter Words (4 found)
   6-Letter Words (2 found)