UMBRAL is a playable word

umbra Scrabble® Dictionary

noun
pl. umbras or umbrae
a dark area
(adjective) umbral
50 Playable Words can be made from "UMBRAL"
   2-Letter Words (9 found)
   3-Letter Words (19 found)
   4-Letter Words (13 found)
   5-Letter Words (5 found)
   6-Letter Words (4 found)