Retardation is valid Scrabble Word

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

Definitions for RETARDATION in dictionary:

Words related to RETARDATION

retardations13 retardative15

How to use RETARDATION in a sentence

Find what other words can be done using letters: "retardation"
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