Unstigmatised is valid Scrabble Word

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

Definitions for UNSTIGMATISED in dictionary:

Similar words containing STIGMATIS without suffix ed and without prefix un

stigmatise13 stigmatism15 stigmatist13 astigmatism16 stigmatised15 stigmatiser14 stigmatises14 stigmatisms16 stigmatists14 astigmatisms17 stigmatisers15 stigmatising16 anastigmatism18 anastigmatisms19 stigmatisation17 stigmatisations18
Find what other words can be done using letters: "unstigmatised"
https://scrabble-word.com/finder/unstigmatised
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