heedless (adj.)
- absentminded
- airy
- aloof
- amnestic
- apathetic
- arbitrary
- ataractic
- blase
- blind
- blocked
- bored
- capricious
- careless
- casual
- converted
- cursory
- deaf
- degage
- detached
- devil-may-care
- disinterested
- dispassionate
- distant
- distracted
- distrait
- easygoing
- feckless
- flippant
- forgetful
- happy-go-lucky
- impassive
- improvident
- inadvertent
- inattentive
- inconsiderate
- incurious
- indifferent
- insouciant
- lackadaisical
- lazy
- listless
- mindless
- neglectful
- negligent
- nonchalant
- oblivious
- offhand
- perfunctory
- phlegmatic
- reasonless
- reckless
- regardless
- repressed
- shiftless
- stolid
- suppressed
- tactless
- thoughtless
- thriftless
- unaccommodating
- uncaring
- unconcerned
- uncooperative
- undiplomatic
- undiscriminating
- uneconomical
- unguarded
- unheeding
- unhelpful
- uninquiring
- uninterested
- uninvolved
- unmindful
- unobliging
- unobservant
- unprepared
- unready
- unreasoning
- unreflective
- untactful
- unthinking
- unthoughtful
- withdrawn
That it is unwise to be heedless ourselves while we are giving advice to others, I will show in a few lines.
