Fluency rhymes with:
truancy, absorbency, accountancy, agency, ascendancy, ascendency, buoyancy, clemency, cogency, complacency, conservancy, consistency, constancy, constituency, consultancy, contingency, counterinsurgency, currency, decency, deficiency, delancey, delancy, delinquency, dependency, despondency, discrepancy, dormancy, efficiency, emergency, equivalency, exigency, expectancy, expediency, frequency, hesitancy, immunodeficiency, incompetency, inconsistency, inconstancy, incumbency, indecency, inefficiency, infancy, infrequency, insolvency, insurgency, interagency, irrelevancy, latency, leniency, malignancy, militancy, nonemergency, occupancy, poignancy, potency, pregnancy, presidency, proficiency, prudency, redundancy, regency, relevancy, residency, resiliency, resurgency, self-sufficiency, solvency, stridency, stringency, sufficiency, surrency, tenancy, tendency, transparency, truancy, urgency, vacancy, vagrancy, vibrancy
Fluency sounds like:
failing, failings, falanga, falling, feeling, feelings, fehling, felines, fellenz, felling, felonies, felonious, felons, filene's, filing, filings, filinski, filling, fillings, film's, filming, films, flailing, flamenco, flames, flaming, flamingo, flamingos, flammang, flange, flanges, flank, flanks, fleeing, fleming, fleming's, flemings, flemish, flemming, flemons, flewelling, flimsy, flinch, fling, flings, flink, flounce, flounces, flowing, flumes, flummox, flung, flunk, flunks, flying, foaling, foiling, following, followings, fooling, fouling, foulness, fueling, fuelling, fullness