ruminative Antonyms

absent-minded stupid thoughtless undiscerning unthinking witless ill-advised unobservant empty-headed unstructured unreasoning unmindful nonreflecting unplanned unheeding unprompted unreflective spontaneous silly senseless autoschediastic extemporaneous flighty heedless imprudent impulsive inadvertent incomprehensible indeliberate injudicious irreflective loony mindless neglectful negligent reckless unthought