Unformalised is valid Scrabble Word

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

Definitions for UNFORMALISED in dictionary:

Similar words containing FORMALIS without suffix ed and without prefix un

formalise14 formalism16 formalist14 formalised16 formaliser15 formalises15 formalisms17 formalists15 deformalise17 formalisers16 formalising17 formalistic18 deformalised19 deformalises18 formalisable19 antiformalist18 deformalising20 formalisation18 antiformalism20 formalisations19 antiformalists19 antiformalisms21 formalistically25
Find what other words can be done using letters: "unformalised"
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