SPELUNKS is a playable word

spelunk Scrabble® Dictionary

verb
spelunked, spelunking, spelunks
to explore caves
105 Playable Words can be made from "SPELUNKS"
   2-Letter Words (9 found)
   3-Letter Words (27 found)
   6-Letter Words (6 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)