There are 7 4-letter words that start with 'boo'.
| boob | book | boom | boon | boor |
| boos | boot | |||
Note: These 7 4-letter words that start with 'boo' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with book, boot, boom, boog, boob, boon, booz, boos, bood, boor, booh, booc, booj, booe, booi.
4-letter words start with 'boo' (7)