- abbot
- abhor
- abort
- ammo
- aorta
- arbor
- armor
- aroma
- athrob
- atom
- bamboo
- baobab
- barroom
- bathroom
- boar
- boat
- boba
- boho
- bomb
- boob
- booboo
- boohoo
- boom
- boor
- boot
- booth
- both
- bottom
- broom
- broth
- haboob
- harbor
- hoar
- hobo
- hoorah
- hoot
- hora
- horror
- mambo
- mammoth
- marmot
- moat
- momma
- moor
- moot
- mortar
- moth
- motor
- motorboat
- motto
- oath
- orator
- roam
- roar
- robot
- room
- root
- rotator
- rotor
- taboo
- tabor
- taro
- tarot
- tattoo
- throat
- throb
- tomato
- tomb
- toot
- tooth
- torah
- toro
- tort
- trot
- troth