There are 18 words that start with 'whirl'.
whirl | whirls | whirly |
whirled | whirler | whirlers |
whirlier | whirlies | whirling |
whirliest | whirligig | whirlpool |
whirlwind | whirligigs | whirlpools |
whirlwinds | whirlybird | whirlybirds |
Note: These 18 words that start with 'whirl' are found from the USA & Canada version of the tournament Scrabble word list.