Improperly is valid Scrabble Word

Is improperly a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is improperly valid Words with Friends?
Words with Friends YES

Definitions for IMPROPERLY in dictionary:

Words related to IMPROPERLY

improper14

How to use IMPROPERLY in a sentence

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