Debriefing rhymes with:
briefing, briefing, beefing, briefing, leafing, beefing, bluffing, briefing, chafing, choreographing, coffing, coughing, doffing, dwarfing, engulfing, fireproofing, golfing, goofing, griffing, handcuffing, huffing, knifing, laughing, leafing, morphing, offing, photographing, proofing, puffing, rebuffing, riffing, rohlfing, roofing, roughing, ruffing, rustproofing, safing, sniffing, snuffing, spiffing, spoofing, staffing, strafing, stuffing, surfing, waterproofing
Debriefing sounds like:
depriving, dubrovnik, dubrovnik's, dubrovniks