compos mentis/ˌkompəs ʹmentis/ adj

• register office
• register ton
• registrar
• registration
• registration document
• registration mark
• registration number
• registration plate
• registry
• registry office
• Regius professor
• regnal
• regnant
• regress
• regression
• regressive
• regret
• regretfully
• regrettable
• regrettably
• regroup
• regt
• regular
• regularize
• regulate