- oh
- ooh
- oi
- ow
- och
- oops
- ouch
- oy
- oooh
- okey-doke
- ole
- okey-dokey
- oh-oh
- oof
- oho
- ooooh
- okeydoke
- oh boy
- ooyah
- oh dear
- oh em gee
- oright
- Oh Em Gee
- oh God
- oh man
- oh me oh my
- oh my
- oh my Allah
- oh my days
- otay
- oh my fuck
- oh my God
- oo arr
- oh my god
- oh my Goddess
- oh my gods
- oo-er
- oh my goodness
- OK
- oh my goodness gracious
- oh my gosh
- oh my heck
- oh my hell
- Ok
- oh my Lord
- oh my stars
- oh my word
- oh my Zeus
- oh no
- oh oh
- oh really
- ooch
- oh snap
- oh well
- oh yeah
- oh, brother
- oh, my stars and garters
- oh, snap
- oh, the humanity
- oh, you
- oh-em-gee
- out on
- opps
- ohai
- ooer
- owie
- okay
- oofda
- ooff
- out upon
- oofta
- OKDK
- OMW
- okeh
- oxi
- ouchie
- ohmigod
- okey
- ohmigosh
- okey dokey
- ohmygawd
- ough
- ohmygod
- ooh ah ah
- ohmygosh
- ooh arrh
- ooh la la
- ooh, matron
- ooh-ah-ah
- okeydokey
- oui
- ook
- OMFG
- oi
- OMG
- oi oi
- OMGWTFBBQ
- oi vay
- oi vey
- omigawd
- omigod
- over
- omigosh
- outasight
- over and out
- oww
- oll korrect
- Oll Korrect
- ods bodikin
- odsbud
- odsooks
- of course my horse
- of course, my horse
- och aye
- oontz
- och aye the noo
- ochanee
- on yer bike
- on your bike
- on your horse, amigo
- on your mark
- odzooks
- open sesame
- on your marks
- oooooh
- on your marks, get set, go
- ooph
- oggy oggy oggy
- oopsadaisy
- oopsie
- oopsy
- oorah
- olé
- onya
- ock
- oink
- oy gevalt
- om mani padme hun
- om nom
- oy vay
- om nom nom
- oy vey
- om nom nom nom
- oh joy
- out of one's way
- omnomnom
- oyez
- ope
- oh ar
Note: these words have been obtained from Wiktionary and have been classified and improved through automated computer linguistics processes.