Costlinesses is valid Scrabble Word

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

Definitions for COSTLINESSES in dictionary:

Words related to COSTLINESSES

costliness12
Find what other words can be done using letters: "costlinesses"
https://scrabble-word.com/finder/costlinesses
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