1. Not liable to error
   - inerrant, unerring

See also: infallible

• othonna
• otic
• otic ganglion
• Otides
• Otididae
• otiose
• otiosity
• Otis
• Otis Skinner
• Otis tarda
• otitis
• otitis externa
• otitis interna
• otitis media
• Oto
• Otoe
• otoganglion
• OTOH
• otolaryngologist
• otolaryngology
• otolith
• otologist
• otology
• otoplasty
• otorhinolaryngologist