Excursing is valid Scrabble Word

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

Definitions for EXCURSING in dictionary:

Words related to EXCURSING

excurse16
Find what other words can be done using letters: "excursing"
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