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