- Obvert Verb
- Obviate Verb
- Occasion Subst. Verb Adj.
- Occidentalise Verb
- Occidentalised Part. Perf. Verb
- Occlude Verb Part. Perf. Part. Präs.
- Occult Adj. Subst. Verb
- Occupied Adj. Verb
- Occupy Verb
- Occur Verb
- Occur along Verb
- Occur around Verb
- Occur on Verb
- Occur over Verb
- Ocellate Adj. Verb
- Ocher Subst. Adj. Verb
- Ochre Adj. Subst. Verb
- OCR Subst. Verb Adj.
- Octroy Subst. Verb
- Octuple Adj. Subst. Verb
- Octuplicate Adj. Subst. Verb
- Odorize Verb
- Off-center Adj. Adv. Verb
- Off-put Part. Perf. Verb
- Offend Verb
- Offer Subst. Verb Adj.
- Offer up Verb
- Office Subst. Adj. Verb
- Officer Subst. Adj. Verb
- Officialise Verb
- Officialize Verb
- Officiate Verb
- Offlap Subst. Verb Adj.
- Offline Adj. Adv. Subst. Verb
- Offload Verb Subst.
- Offprint Subst. Verb Adj.
- Offsaddle Verb Subst.
- Offset Subst. Verb Adj.
- Offshore Adj. Adv. Subst. Verb Part. Perf.
- Ogle Verb Subst. Part. Präs.
- Oil Subst. Verb Adj.
- Oink Inter. Subst. Verb
- OK Adj. Adv. Inter. Subst. Verb Eigenn.
- Okay Adj. Adv. Inter. Subst. Verb
- Olden Adj. Verb
- Oleate Subst. Verb Adj.
- Oleograph Subst. Adj. Verb
- Omen Subst. Verb
- Omit Verb
- Onboard Adj. Verb Adv.
- Onceover Subst. Verb
- One-up Verb Adj. Subst.
- Onlap Subst. Verb
- Oof Inter. Subst. Verb
- Ooh Inter. Verb Subst.
- Oomph Subst. Inter. Verb
- Oophorectomise Verb
- Oops Inter. Subst. Adj. Verb
- Ooze Subst. Verb Adj.
- Ooze out Verb