There are 13 11-letter words that start with 'ai'.
| aiguillette | ailanthuses | ailurophile |
| ailurophobe | aimlessness | airbrushing |
| airdropping | airfreights | airlessness |
| airmanships | airproofing | airsickness |
| airworthier | ||
Note: These 13 11-letter words that start with 'ai' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with air, ail, aid, aim, aig, ais, ait, ain, aik, aio, aiv, aib.
3-letter words start with 'ai' (7)