- abbot
- about
- abut
- attaboy
- aunt
- aunty
- auto
- batboy
- baton
- batty
- boat
- boot
- booty
- botany
- bounty
- bout
- bunt
- buoyant
- butt
- button
- buyout
- nanobot
- natant
- natty
- nutty
- oaty
- onto
- tabby
- taboo
- tattoo
- tatty
- taunt
- taut
- tony
- toon
- toot
- tout
- tuba
- tubby
- tuna
- tutu
- unbutton
- unto