STRATUS is a playable word

stratus Scrabble® Dictionary

noun
pl. strati or stratuses
a type of cloud
66 Playable Words can be made from "STRATUS"
   2-Letter Words (6 found)
   3-Letter Words (18 found)
   4-Letter Words (17 found)
   6-Letter Words (9 found)
   7-Letter Words (1 found)