Common Words:
* Ail: To suffer from an illness.
* Aisle: A passageway between rows of seats.
* Fail: To not succeed.
* Hail: Frozen precipitation.
* Jail: A prison.
* Mail: Letters or packages sent by post.
* Nail: A small, pointed piece of metal.
* Sail: To travel on water in a boat with sails.
* Tail: The rear end of an animal.
* Trail: A path or track.
* Waist: The narrow part of the body between the ribs and hips.
Less Common Words:
* Ailing: In poor health.
* Aimable: Friendly and approachable.
* Airedale: A breed of dog.
* Airy: Light and breezy.
* Bailed: Removed water from a boat.
* Cailed: (archaic) Called.
* Fairie: (archaic) A fairy.
* Gaily: Cheerfully.
* Hailed: Greeted with enthusiasm.
* Jailed: Put in prison.
* Mailed: Sent by post.
* Nailed: Fastened with a nail.
* Sailed: Traveled by boat.
* Tailed: Followed closely.
* Wailed: Made a loud, mournful cry.
Note: This is not an exhaustive list, and there may be other words that include "AI" in their spelling.