Succourless is valid Scrabble Word

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

Definitions for SUCCOURLESS in dictionary:

Words related to SUCCOURLESS

succour11
Find what other words can be done using letters: "succourless"
https://scrabble-word.com/finder/succourless
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