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