Organisational is valid Scrabble Word

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

Definitions for ORGANISATIONAL in dictionary:

Similar words containing ORGANISATION without suffix al

organisation13 organisations14 inorganisation15 reorganisation15 disorganisation17 inorganisations16 reorganisations16 suborganisation18
Find what other words can be done using letters: "organisational"
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