KAYAK is a playable word

kayak Scrabble® Dictionary

verb
kayaked, kayaking, kayaks
to travel in a kayak (an Inuit canoe)
9 Playable Words can be made from "KAYAK"
   2-Letter Words (4 found)
   3-Letter Words (2 found)
   4-Letter Words (2 found)
   5-Letter Words (1 found)