(n.) That which qualifies, modifies, or restricts; a qualifying term or statement.

alleviating alleviative altering analgesic anesthetic anodyne balmy balsamic benumbing bounding calmant calmative cathartic cleansing deadening demulcent dulling easing emollient extenuating extenuatory lenitive limitative limiting mitigating mitigative mitigatory modificatory modifying modulatory numbing pain-killing palliative purgative qualificative qualificatory qualifying relieving remedial restricting restrictive sedative softening soothing subduing