(a.) Not sensitive; wanting sensation, or wanting acute sensibility.

Philistine aloof anesthetic anesthetized asleep benumbed blanket bloodless boorish caddish callous calloused case-hardened casual coarse cold cold of heart coldblooded coldhearted crude dead deadened dull flinthearted flinty general hard hard of heart hardened hardhearted heartless ill-bred impassible impassive imperceptive impercipient impervious imprudent inconsiderate incurious indifferent indiscreet indiscriminate indiscriminative indurated insensate insensible insentient inured loutish louty nasty nonjudgmental numb numbed obdurate obtuse offensive pachydermatous promiscuous proof against rocky senseless steeled against steely stony stonyhearted tactless thick-skinned thick-witted unconcerned uncritical uncriticizing undemanding undifferentiating undiscreet undiscriminating undiscriminative unexacting unfastidious unfeeling unfelt unfeminine ungenteel ungentle ungentlemanly unimpressible unimpressionable unladylike unmerciful unmeticulous unnatural unparticular unperceptive unrefined unresponsive unselective unsolicitous unsubtle unsusceptible untactful vulgar wholesale