- Occulted Adj
- Occupational Adj
- Occupative Adj
- Occupiable Adj
- Occupied Adj
- Occurrent Adj Noun
- Oceangoing Adj
- Oceanian Adj Noun
- Oceanic Adj
- Oceanographic Adj
- Oceanographical Adj
- Oceanological Adj
- Oceanside Adj Noun
- Ocellar Adj
- Ocellate Adj Verb
- Ocher Noun Adj
- Ocherous Adj
- Ochlocratic Adj
- Ochre Adj Noun
- Ochreate Adj
- Ochred Adj
- Ochreous Adj
- Ochring Adj
- Ochroid Adj
- Ochronotic Adj
- Ochrous Adj
- Ocker Noun Adj
- Octadecadienoic Adj
- Octadecanoic Adj
- Octadecenic Adj
- Octadecenoic Adj
- Octadecyl Adj Noun
- Octagonal Adj
- Octahedral Adj
- Octal Adj Noun
- Octamerous Adj
- Octandrous Adj
- Octangular Adj
- Octanoic Adj
- Octantal Adj
- Octastyle Adj Noun
- Octatomic Adj
- Octaval Adj
- Octavalent Adj
- Octennial Adj Noun
- Octic Adj
- Octivalent Adj
- Octocentenary Noun Adj
- Octocyclic Adj
- Octodecanoic Adj
- Octodenary Adj Noun
- Octogenarian Adj Noun
- Octogynous Adj
- Octoic Adj
- Octonary Adj Noun
- Octopartite Adj
- Octoploid Adj Noun
- Octopolar Adj
- Octosyllabic Adj
- Octovalent Adj