TAXIS is a playable word

taxi Scrabble® Dictionary

verb
taxied, taxiing or taxying, taxis or taxies
to travel in a taxicab
28 Playable Words can be made from "TAXIS"
   2-Letter Words (10 found)
   3-Letter Words (13 found)
   4-Letter Words (4 found)
   5-Letter Words (1 found)