There are 14 11-letter words that start with 'bas'.
| baserunning | bashfulness | basipetally |
| basketballs | basketworks | basophilias |
| bassoonists | bastardised | bastardises |
| bastardized | bastardizes | bastinading |
| bastinadoed | bastinadoes | |
Note: These 14 11-letter words that start with 'bas' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with basi, bast, base, bass, bask, bash, basa, baso, basc, basm, basq.
4-letter words start with 'bas' (5)