Subreptive is valid Scrabble Word

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

Definitions for SUBREPTIVE in dictionary:

Words related to SUBREPTIVE

surreptitious15
Find what other words can be done using letters: "subreptive"
https://scrabble-word.com/finder/subreptive
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