THICKER is a playable word

thick Scrabble® Dictionary

adjective
thicker, thickest
having relatively great extent from one surface to its opposite
noun
pl. thicks
the thickest part
86 Playable Words can be made from "THICKER"
   2-Letter Words (10 found)
   3-Letter Words (22 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)