KEY: Privy.
SYN: Secret, clandestine, cognizant, acquainted_with.
ANT: Open, unsealed, {not_acquainted_with}, not_cognizant_of, [SeePRIVATE].

• Opprobrium
• Opulence
• Opulent
• Oracular, [See OPINIONATIVE]
• Oral
• Orate
• Oration, [See COGITATE]
• Oratory
• Orb
• Orbit
• Ordain
• Ordeal
• Orderly
• Order
• Order, {[t]?}
• Ordinance
• Ordinary
• Organic
• Organization
• Organize
• Orifice
• Origin
• Original
• Originate
• Ornament