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1. Taking insufficient care; negligent: a careless housekeeper; careless proofreading.
2. Marked by or resulting from lack of forethought or thoroughness: a careless mistake.
3. Showing a lack of consideration: a careless remark.
4. Unconcerned or indifferent; heedless: careless of the consequences.
5. Unstudied or effortless: danced with careless grace.
6. Exhibiting a disposition that is free from cares; cheerful: a careless grin; a careless wave of the hand.

care′less·ly adv.
care′less·ness n.
Synonyms: careless, heedless, thoughtless, inadvertent
These adjectives apply to people who perform actions marked by insufficient care or attention or to the actions themselves. Careless often implies negligence or casual indifference: "It is natural for careless writers to run into faults they never think of" (George Berkeley).
Heedless can suggest willful or reckless disregard: "She ... watched the top of the hill for someone drunk or heedless coming over it in part of her lane" (Andre Dubus).
Thoughtless applies to actions taken without due consideration; it frequently implies lack of concern for others: "a thoughtless remark about the war that will worry an already worried child" (Kristin Henderson).
Inadvertent implies unintentional lack of care or attention: "For the deterrence theorists, the greatest worry was inadvertent war, a cataclysm that might follow from misperception" (Eliot A. Cohen).
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. done with or acting with insufficient attention; negligent
2. (often foll by: in, of, or about) unconcerned in attitude or action; heedless; indifferent (to): she's very careless about her clothes.
3. (usually prenominal) carefree
4. (usually prenominal) unstudied; artless: an impression of careless elegance.
ˈcarelessly adv
ˈcarelessness n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈkɛər lɪs)

1. not paying enough attention to what one does.
2. not exact or accurate: careless work.
3. heedless: a careless remark.
4. unconcerned.
5. artless; unstudied: careless beauty.
[before 1000]
care′less•ly, adv.
care′less•ness, n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


1. 'careful'

If you are careful, you do something with a lot of attention.

She told me to be careful with the lawnmower.
He had to be careful about what he said.
This law will encourage more careful driving.
2. 'careless'

If you are careless, you do things badly because you are not giving them enough attention. Careless is the opposite of careful.

I had been careless and let him wander off on his own.
Some parents are accused of being careless with their children's health.
3. 'carefree'

Someone who is carefree has no worries and can therefore enjoy life.

When he was younger, he was carefree.
...his normally carefree attitude.
Collins COBUILD English Usage © HarperCollins Publishers 1992, 2004, 2011, 2012
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.careless - marked by lack of attention or consideration or forethought or thoroughness; not careful; "careless about her clothes"; "forgotten by some careless person"; "a careless housekeeper"; "careless proofreading"; "it was a careless mistake"; "hurt by a careless remark"
inattentive - showing a lack of attention or care; "inattentive students"; "an inattentive babysitter"
incautious - lacking in caution; "an incautious remark"; "incautious talk"
unconcerned - lacking in interest or care or feeling; "the average unconcerned that his or her plight is the result of a complex of personal and economic and governmental actions...beyond the normal citizen's comprehension and control"; "blithely unconcerned about his friend's plight"
negligent - characterized by neglect and undue lack of concern; "negligent parents"; "negligent of detail"; "negligent in his correspondence"
superficial - concerned with or comprehending only what is apparent or obvious; not deep or penetrating emotionally or intellectually; "superficial similarities"; "a superficial mind"; "his thinking was superficial and fuzzy"; "superficial knowledge"; "the superficial report didn't give the true picture"; "only superficial differences"
imprudent - not prudent or wise; "very imprudent of her mother to encourage her in such silly romantic ideas"; "would be imprudent for a noneconomist to talk about the details of economic policy"- A.M.Schlesinger
careful - exercising caution or showing care or attention; "they were careful when crossing the busy street"; "be careful to keep her shoes clean"; "did very careful research"; "careful art restorers"; "careful of the rights of others"; "careful about one's behavior"
2.careless - effortless and unstudied; "an impression of careless elegance"; "danced with careless grace"
artless - simple and natural; without cunning or deceit; "an artless manner"; "artless elegance"
3.careless - (usually followed by `of') without due thought or consideration; "careless of the consequences"; "crushing the blooms with regardless tread"
heedless, unheeding - marked by or paying little heed or attention; "We have always known that heedless self-interest was bad morals; we know now that it is bad economics"--Franklin D. Roosevelt; "heedless of danger"; "heedless of the child's crying"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


1. slapdash, irresponsible, sloppy (informal), cavalier, offhand, neglectful, slipshod, lackadaisical, inattentive He pleaded guilty to careless driving.
slapdash alert, attentive, correct, careful, cautious, wary, on the ball (informal), watchful
3. nonchalant, casual, offhand, artless, unstudied With a careless flip of his wrists, he sent the ball on its way.
nonchalant careful, painstaking
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002


2. Indifferent to correctness, accuracy, or neatness:
3. Showing no concern, attention, or regard:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
غَيرُ حَريص حَذِرمُهْمِل
bất cẩn


[ˈkɛəlɪs] ADJ
1. (= negligent) [person] → descuidado; [appearance] → descuidado, desaliñado; [handwriting] → poco cuidado
careless drivingconducción f negligente
careless driverconductor(a) m/f negligente
a careless mistakeuna falta de atención, un descuido
she was producing work that was carelessno ponía cuidado en el trabajo que hacía
it was careless of her to do thatno fue muy prudente de or por su parte hacer eso
how careless of me!¡qué descuido!
his spelling is carelessno pone cuidado en la ortografía
you shouldn't be so careless with moneydeberías tener más cuidado con el dinero, deberías mirar más el dinero
2. (= thoughtless) [remark, comment] → desconsiderado
she is careless of othersno le importan los demáses desconsiderada con los demás
3. (= carefree) [existence, days] → despreocupado
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


[ˈkɛərləs] adj
[person] → négligent(e)
She's very careless → Elle est très négligente.
to be careless with sth → ne pas se soucier de qch
to be careless of sth (= heedless) [+ health] → être peu soucieux/euse de qch
to be careless of one's appearance → être négligé(e), être négligé(e) de sa personne
[driver] → imprudent(e)
[use] → inconsidéré(e)
[talk] → irréfléchi(e)
[handling] → négligent(e)
[mistake] → d'inattention
a careless mistake → une faute d'inattention careless drivingcareless driving nconduite f dangereuse
Collins English/French Electronic Resource. © HarperCollins Publishers 2005


(= negligent, heedless) person, worker, worknachlässig; driverunvorsichtig; drivingleichtsinnig; remarkgedankenlos; careless mistakeFlüchtigkeitsfehler m; how careless of me!wie dumm von mir; (= clumsy)wie ungeschickt von mir; to be careless of one’s healthnicht auf seine Gesundheit achten; to be careless of somebody’s feelingsnicht an jds Gefühle (acc)denken; to be careless in one’s remarksgedankenlos daherreden; to be careless in one’s behaviourleichtsinnig handeln
(= carefree)sorglos, unbekümmert
dress, elegancelässig
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007


[ˈkɛəlɪs] adj (worker, driver, driving) → distratto/a, disattento/a, negligente; (work) → fatto/a con poco impegno; (thoughtless, remark) → senza tatto, privo/a di tatto
careless mistake → errore m di distrazione
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995


(keə) noun
1. close attention. Do it with care.
2. keeping; protection. Your belongings will be safe in my care.
3. (a cause for) worry. free from care; all the cares of the world.
4. treatment. medical care; skin care.
1. to be anxious or concerned. Don't you care if you fail?; I couldn't care less (= It's of no importance to me); She really cares about her career.
2. to be willing (to). Would you care to have dinner with me?
ˈcareful adjective
1. taking care; being cautious. Be careful when you cross the street; a careful driver.
2. thorough. a careful search.
ˈcarefully adverb
ˈcarefulness noun
ˈcareless adjective
not careful (enough). This work is careless; a careless worker.
ˈcarelessly adverb
ˈcarelessness noun
ˈcarefree adjective
light-hearted. a carefree attitude.
care'giver noun
someone whose job is to look after a sick or disabled person.
ˈcaretaker noun
a person who looks after a building etc.
ˈcareworn adjective
worn out by worry. a careworn face.
ˈcare for
1. to look after (someone). The nurse will care for you.
2. to be fond of. I don't care for him enough to marry him.
care of (usually written c/o)
at the house or address of.
take care
to be cautious, watchful, thorough etc. Take care or you will fall!
take care of
to look after. Their aunt took care of them when their parents died.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.


مُهْمِل neopatrný skødesløs nachlässig απρόσεκτος descuidado huolimaton négligent nemaran negligente 不注意な 부주의한 achteloos uvøren niedbały descuidado небрежный slarvig ไม่ระมัดระวัง dikkatsiz bất cẩn 粗心大意的
Multilingual Translator © HarperCollins Publishers 2009


a. descuidado-a; desatento-a.
English-Spanish Medical Dictionary © Farlex 2012


adj descuidado
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in classic literature ?
Daughtry, himself moulded on generously careless lines, could not but appreciate the spaciousness of the Ancient Mariner, who had evidently lived spaciously and who was ever for sharing the treasure they sought.
And never a flake That the vapour can make With the moon-tints of purple and pearl, Can vie with the modest Eulalie's most unregarded curl - Can compare with the bright-eyed Eulalie's most humble and careless curl.
From this time, the uninvited guest was taken into favor; his jokes began to be relished; his careless, free and easy air, to be considered singularly amusing; and in the end, he was pronounced by the travellers one of the merriest companions and most entertaining vagabonds they had met with in the wilderness.
Others carry the matter still further, and inquire how many of his ancestors have been citizens, as his grandfather, great-grandfather, etc., but some persons have questioned how the first of the family could prove themselves citizens, according to this popular and careless definition.
This said in a careless tone, Captain Nemo left the saloon.
We can imagine this bold, careless, impulsive artist, with his moments of great exaltation and alternate depression, a kind of Chinese Paul Verlaine, with his sensitive mind of a child, always recording impressions as they come.
"Very much," said Nicholas flushing, and with a stupid careless smile, for which he was long unable to forgive himself, "I have lost a little, I mean a good deal, a great deal- forty three thousand."
As in decapitating the whale, the operator's instrument is brought close to the spot where an entrance is subsequently forced into the spermaceti magazine; he has, therefore, to be uncommonly heedful, lest a careless, untimely stroke should invade the sanctuary and wastingly let out its invaluable contents.
Revenge was the ruling motive, and the members of the terroristic organizations were careless of their own lives and hopeless about the future.
"He was a man of untidy habits,--very untidy and careless. He was left with good prospects, but he threw away his chances, lived for some time in poverty with occasional short intervals of prosperity, and finally, taking to drink, he died.
He pursued his retreat, careless in what direction it might take him, to a footpath across the fields, which led to the highroad and the railway station.
"I dare say you do, but we are all too careless about our English.