COTIDAL is a playable word

cotidal Scrabble® Dictionary

adjective
indicating coincidence of the tides
111 Playable Words can be made from "COTIDAL"
   2-Letter Words (16 found)
   3-Letter Words (32 found)
   5-Letter Words (12 found)
   6-Letter Words (3 found)
   7-Letter Words (1 found)