unthinking (root: unthink)

• POS: Adjective
• HYPHEN: un=think=ing

CIDE DICTIONARY

unthinking, a. 

•  Not thinking; not heedful; thoughtless; inconsiderate; as, unthinking youth.  [1913 Webster]
•  Not indicating thought or reflection; thoughtless.  [1913 Webster]

  "With earnest eyes, and round unthinking face,
  He first the snuffbox opened, then the case."  [1913 Webster]

OXFORD DICTIONARY

unthinking, adj.
1 thoughtless.
2 unintentional, inadvertent.

Derivative

unthinkingly adv. unthinkingness n.

THESAURUS

unthinking

airy, arbitrary, automatic, blank, blankminded, blind, brainless, calm, capricious, careless, casual, compulsive, conditioned, crazy, cursory, degage, discourteous, disregardant, disregardful, easygoing, empty, empty-headed, fatuous, feckless, flippant, foolish, forced, forgetful, free and easy, hasty, headless, heedless, idiotic, ignorant, ill-advised, ill-considered, ill-contrived, ill-devised, ill-gauged, ill-judged, illogical, imbecilic, impolite, impolitic, imprudent, impulsive, inadvertent, inadvisable, inane, incogitant, inconsiderate, indifferent, indiscreet, inept, inexpedient, injudicious, insane, insensate, insouciant, instinctive, involuntary, irrational, lackbrained, lazy, lean-minded, lean-witted, mad, mechanical, mindless, misadvised, misguided, moronic, myopic, neglectful, nirvanic, nonsensical, not bright, oblivious, of little brain, offhand, passive, pea-brained, perfunctory, pin-brained, quietistic, rash, reasonless, reckless, reflex, reflexive, regardless, relaxed, respectless, rude, senseless, short-sighted, shortsighted, silly, slackminded, slackwitted, stupid, tactless, thoughtfree, thoughtless, tranquil, unaccommodating, unadvised, uncalculating, uncaring, uncivil, uncomplaisant, unconscious, unconsidered, uncooperative, undesigned, undiplomatic, undiscerning, undiscriminating, unforeseeing, ungifted, unguarded, unguided, unheedful, unheeding, unhelpful, unideaed, unintellectual, unintelligent, unintended, unintentional, unmeant, unmeditated, unmindful, unobliging, unoccupied, unperceiving, unperceptive, unplanned, unpremeditated, unprepared, unprompted, unpurposed, unready, unreasonable, unreasoning, unreflecting, unreflective, unseeing, unsensible, unsolicitous, unsound, untactful, untalented, unthought-of, unthoughtful, unwilled, unwilling, unwise, unwitting, vacant, vacuous, witless, wrecking

ROGET THESAURUS

unthinking

Necessity

N necessity, involuntariness, instinct, blind impulse, inborn proclivity, innate proclivity, native tendency, natural tendency, natural impulse, predetermination, necessity, necessitation, obligation, compulsion, subjection, stern necessity, hard necessity, dire necessity, imperious necessity, inexorable necessity, iron necessity, adverse necessity, fate, what must be, destiny, destination, fatality, fate, kismet, doom, foredoom, election, predestination, preordination, foreordination, lot fortune, fatalism, inevitableness, spell, star, stars, planet, planets, astral influence, sky, Fates, Parcae, Sisters three, book of fate, God's will, will of Heaven, wheel of Fortune, Ides of March, Hobson's choice, last shift, last resort, dernier ressort, pis aller, necessaries, necessarian, necessitarian, fatalist, automaton, necessary, needful, fated, destined, elect, spellbound compulsory, uncontrollable, inevitable, unavoidable, irresistible, irrevocable, inexorable, avoidless, resistless, involuntary, instinctive, automatic, blind, mechanical, unconscious, unwitting, unthinking, unintentional, impulsive, necessarily, of necessity, of course, ex necessitate rei, needs must, perforce, nolens volens, will he nil he, willy nilly, bon gre mal gre, willing or unwilling, coute que coute, faute de mieux, by stress of, if need be, it cannot be helped, there is no help for, there is no helping it, it will be, it must be, it needs to be, it must be so, it will have its way, the die is cast, jacta est alea, che sara sara, it is written, one's days are numbered, one's fate is sealed, Fata obstant, diis aliter visum, actum me invito factus, non est meus actus, aujord'hui roi demain rien, quisque suos patimur manes, The moving finger writes and having writ moves on, Nor all thy piety nor wit shall draw it back to ca.

Incogitancy

N incogitancy, vacancy, inunderstanding, fatuity thoughtlessness, vacuity, couch potato, vegetable, vacant, unintellectual, unideal, unoccupied, unthinking, inconsiderate, thoughtless, mindless, no-brain, vacuous, absent, diverted, irrational narrow-minded, unthought of, undreamt 'of, unconsidered, off one's mind, incogitable, not to be thought of, absence d'esprit, pabulum pictura pascit inani.

Inattention

N inattention, inconsideration, inconsiderateness, oversight, inadvertence, inadvertency, nonobservance, disregard, supineness, etourderie, want of thought, heedlessness, insouciance, abstraction, absence of mind, absorption of mind, preoccupation, distraction, reverie, brown study, deep musing, fit of abstraction, inattentive, unobservant, unmindful, heedless, unthinking, unheeding, undiscerning, inadvertent, mindless, regardless, respectless, listless, blind, deaf, bird-witted, hand over head, cursory, percursory, giddy-brained, scatter-brained, hare-brained, unreflective, unreflecting, ecervele, offhand, dizzy, muzzy, brainsick, giddy, giddy as a goose, wild, harum-scarum, rantipole, highflying, heedless, careless, inconsiderate, thoughtless, absent, abstracted, distrait, absentminded, lost, lost in thought, wrapped in thought, rapt, in the clouds, bemused, dreaming on other things, musing on other things, preoccupied, engrossed, daydreaming, in a reverie, off one's guard, napping, dreamy, caught napping, disconcerted, distracted, put out, inattentively, inadvertently, absent-mindedly, per incuriam, sub silentio, Int, stand at ease, stand easy!, the attention wanders, one's wits gone a woolgathering, one's wits gone a bird's nesting, it never entered into one's head, the mind running on other things, one's thoughts being elsewhere, had it been a bear it would have bitten you.