Tirr is valid Scrabble Word

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

Definitions for TIRR in dictionary:

Words related to TIRR

tirred7 tirring8 tirrs5

Words that contain TIRR

tirrs5 stirra6 stirre6 tirred7 tirrit6 stirrah10 stirras7 stirred8 stirrer7 stirres7 stirrup9 tirring8 tirrits7 stirrahs11 stirrers8 stirring9 stirrups10 tirrivee11 tirrivie11 bestirred12 stirrable11 stirrings10 tirrivees12 tirrivies12 unstirred10 upstirred12 bestirring13 stirringly14 upstirring13 antirrhinum16 overstirred15 antirrhinums17 overstirring16 postirradiation18
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