ECESISES is a playable word

ecesis Scrabble® Dictionary

noun
pl. ecesises
the establishment of a plant or animal in a new environment
(adjective) ecesic
30 Playable Words can be made from "ECESISES"
   2-Letter Words (3 found)
   3-Letter Words (9 found)
   4-Letter Words (10 found)
   5-Letter Words (4 found)
   6-Letter Words (3 found)
   8-Letter Words (1 found)