Here's what rhymes with credulously.
sedulously incredulously Words that almost rhyme with credulously
perilously querulously garrulously tremulously venomously nebulously definitely evidently delicacy eminently celibacy delicately excellently irrevocably arrogantly relevancy creditably relevantly sensuously tenuously resonantly genitally maritally mellifluously inevitably presidency genuinely eloquently gentlemanly plentifully negligibly petulantly irrelevancy irrelevantly questionably sensually desultorily malevolently expressionlessly decadently decadency eventually exceptionally indefinitely affectionately ethnography professionally congenitally preeminently telegraphy benevolently intelligibly textually epigraphy technocracy inequitably obsessionally intentionally unquestionably conventionally impenetrably objectionably discreditably selenography unintelligibly bidirectionally unexceptionably unexceptionally unprofessionally unintentionally unconventionally