Exertional is valid Scrabble Word

Is exertional a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words NO
Is exertional valid Words with Friends?
Words with Friends NO

Definitions for EXERTIONAL in dictionary:

Similar words containing ERTION without suffix al and without prefix ex

exertion15 assertion9 desertion10 exertions16 exsertion16 insertion9 assertions10 desertions11 exsertions17 insertions10 insertional11 reassertion11 reinsertion11 overexertion22 reassertions12 reinsertions12 disconcertion18 overassertion16 overexertions23 disconcertions19 overassertions17
Find what other words can be done using letters: "exertional"
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