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careful

[kair-fuh l] /ˌkɛər fəl/
adjective
1.
cautious in one's actions:
Be careful when you cross the street.
2.
taking pains in one's work; exact; thorough:
a careful typist.
3.
(of things) done or performed with accuracy or caution:
careful research.
4.
solicitously mindful (usually followed by of, about, or in):
careful of the rights of others; careful about one's behavior; careful in speech.
5.
Archaic.
  1. troubled.
  2. attended with anxiety.
Origin
1000
before 1000; Middle English; Old English carful, cearful. See care, -ful
Related forms
carefully, adverb
carefulness, noun
quasi-careful, adjective
quasi-carefully, adverb
ultracareful, adjective
ultracarefully, adverb
Synonyms
1. watchful, guarded, chary, circumspect. Careful, cautious, discreet, wary imply a watchful guarding against something. Careful implies guarding against mistakes, by paying strict and close attention to details, and, often, trying to use good judgment: He was careful to distinguish between them. Cautious implies a fear of some unfavorable situation and investigation before coming to conclusions: cautious about investments. Discreet implies being prudent in speech and action and being trustworthy as a confidant: discreet in manner, in keeping secrets. Wary implies a vigilant lookout for a danger suspected or feared: wary of polite strangers. 2. meticulous, discerning. 2, 3. See painstaking. 3. conscientious. 4. thoughtful, concerned, solicitous, attentive, heedful, regardful.
Antonyms
1–4. careless.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ultra careful

careful

/ˈkɛəfʊl/
adjective
1.
cautious in attitude or action; prudent
2.
painstaking in one's work; thorough: he wrote very careful script
3.
(usually postpositive; foll by of, in, or about) solicitous; protective: careful of one's reputation
4.
(archaic) full of care; anxious
5.
(Brit) mean or miserly
Derived Forms
carefully, adverb
carefulness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for ultra careful

careful

adj.

Old English cearful "mournful, sad," also "full of care or woe; anxious; full of concern" (for someone or something), thus "applying attention, painstaking, circumspect;" from care (n.) + -ful.

Online Etymology Dictionary, © 2010 Douglas Harper
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7
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