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