Obfuscation rhymes with:
confiscation, confiscation, confiscation, abdication, acidification, adjudication, advocation, affrication, allocation, altercation, amplification, application, assocation, authentication, avocation, bifurcation, certification, cladification, clarification, classification, codification, collocation, communication, complication, confiscation, convocation, decertification, dedication, deification, demarcation, desiccation, detoxication, detoxification, disembarkation, dislocation, disqualification, diversification, domestication, duplication, echolocation, edification, education, electrification, embarkation, equivocation, eradication, evocation, excommunication, explication, extrication, fabrication, falsification, fortification, gasification, gentrification, glorification, gratification, identification, implication, indemnification, indication, intensification, intoxication, invocation, justification, location, lubrication, magnification, medication, misallocation, misapplication, miscommunication, misidentification, modification, multiplication, mummification, notification, nullification, ossification, pacification, personification, pontification, prefabrication, prevarication, prognostication, provocation, publication, purification, qualification, quantification, ramification, ratification, reallocation, recertification, reclassification, rectification, rededication, relocation, replication, reunification, revocation, russification, sanctification, saponification, simplification, sophistication, specification, suffocation, syndication, telecommunication, unification, vacation, verification, vilification, vindication, vocation
Obfuscation sounds like:
objection, obsidian, opposition