1. (a.) Having no regard; heedless; careless; as, regardless of life, consequences, dignity.

2. (a.) Not regarded; slighted.

airy aloof anyhow anyway anywise apathetic at all at all costs at all events at any cost at any rate ataractic behindhand blase bored by any means careless casual cursory degage delinquent derelict despite detached devil-may-care disinterested dispassionate disregardant disregardful distant distracted distrait easygoing even with flippant forgetful free and easy heedless however impassive in any case in any event in any way in despite of in spite of inadvertent inattentive inconsiderate incurious indifferent inexcitable inobservant insouciant irregardless irrespective of lackadaisical lax lazy listless mindless neglectful negligent nevertheless no matter what nohow nonchalant nonetheless notwithstanding oblivious offhand perfunctory phlegmatic pococurante reckless regardless of regardless of cost remiss respectless slack spite of stolid tactless thoughtless turned-off unanxious unconcerned undiplomatic undiscriminating unheedful unheeding uninquiring uninterested uninvolved unmarking unmindful unnoticing unnoting unobservant unobserving unprepared unready unremarking unsolicitous untactful unthinking with withdrawn