Oration rhymes with:
administration, arbitration, calibration, castration, celebration, concentration, conflagration, consecration, dehydration, demonstration, desecration, disintegration, duration, emigration, filtration, frustration, gyration, hydration, illustration, immigration, infiltration, integration, libration, migration, ministration, narration, nitration, orchestration, penetration, proration, prostration, registration, rehydration, sequestration, vibration
Oration sounds like:
ordain, ordoyne, oriordan, orten, ortman, ortmann, orton, ortwein, ortwin