TESTIS is a playable word

testis Scrabble® Dictionary

noun
pl. testes
a male reproductive gland
36 Playable Words can be made from "TESTIS"
   2-Letter Words (7 found)
   3-Letter Words (12 found)
   4-Letter Words (11 found)
   5-Letter Words (5 found)
   6-Letter Words (1 found)