Ob + accusative
On account
Obliviscor
I forget
Ocassio
Opportunity
Occido, -sum
I kill
Occupo
I occupy, seiz
Occurro
I meet, run up to
Oculus
Eye
Odi, odisse
I hate
Odium
Hatred
Offero, obtuli, oblats,
I offer, I present
Olim
Once
Omnis
All, every
Onus, -eris
Burden, load
Oppidum
Town
Opprimo
I overwhelm, crush
Oppugno
I attack
Opus, -eris
Work, piece of work
Orno
I decorate
Oro
I beg
Os, oris
Mouth, face
Ostendo
I show
Otium
Leisure