AMEBA is a playable word

ameba Scrabble® Dictionary

noun
pl. amebas or amebae
amoeba
(adjective) ameban, amebic, ameboid
20 Playable Words can be made from "AMEBA"
   2-Letter Words (9 found)
   3-Letter Words (6 found)
   4-Letter Words (3 found)
   5-Letter Words (2 found)