Whirriest is valid Scrabble Word

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

9 letters word
15 points in Scrabble
14 points in WWF

Definitions for WHIRRIEST in dictionary:

ADJECTIVE:

WHIRRY, characteristic of a whir

Words related to WHIRRIEST

whirry15

Similar words containing WHIRR without suffix iest

whirr11 whirrs12 whirry15 whirra12 whirred14 whirret13 whirrets14 whirried15 whirrier14 whirries14 whirring15 whirreted16 whirrings16 whirrying19 whirreting17

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