Obstructingly is valid Scrabble Word

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

Definitions for OBSTRUCTINGLY in dictionary:

Similar words containing OBSTRUCTING without suffix ly

obstructing16
Find what other words can be done using letters: "obstructingly"
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