English Reference

Word

conscious

Phoneticscon·scious, stress on the first syllable

US/ˈkɑnʃəs/

UK/kˈɒnʃəs/

Definitions

01awake and alert

B2 · Upper Intermediate Medicine

adj. awake and able to see, hear, and think.

adj. physiologically awake and responsive to stimuli; possessing active mental faculties.

“The patient was fully conscious and able to answer the doctor's questions.”

“Although the victim had suffered a significant blow to the head, he remained conscious until the paramedics arrived at the scene.”

02aware of something

B2 · Upper Intermediate

adj. noticing or being aware of a particular fact or feeling.

adj. having knowledge or awareness of an external object, state, or fact; often followed by 'of'.

“She was conscious of someone following her down the street.”

“The speaker was acutely conscious of the growing tension in the room as he addressed the controversial budget cuts.”

Antonyms

03intentional

B2 · Upper Intermediate

adj. done on purpose after thinking about it.

adj. resulting from a deliberate mental choice or intention rather than instinct or habit.

“He made a conscious effort to be more polite to his colleagues.”

“The designer made a conscious decision to use only recycled materials, even though it increased the total production cost.”

04concerned about a topic

B2 · Upper Intermediate

adj. caring a lot about a specific issue, like the environment or health.

adj. strongly interested in or concerned about a particular subject; frequently used in compounds like 'fashion-conscious'.

“Many young people are very environmentally conscious these days.”

“The brand targets health-conscious consumers who are willing to pay a premium for organic, sugar-free alternatives.”

Synonyms

Collocations

Common phrases and expressions where native English speakers use the word “conscious” in context.

Verb

01. become conscious of the noise

“I suddenly became conscious of a strange clicking noise coming from the engine.”

verb + adj + prep

02. make a conscious effort

“She made a conscious effort to be more polite to her colleagues.”

verb + adj + noun

03. remain conscious

“The athlete managed to remain conscious despite the heavy blow to his head.”

verb + adj

Adjective

04. conscious of the risks

“We are well aware and conscious of the risks involved in this investment.”

adj + prep

05. environmentally conscious

“Modern consumers are becoming more environmentally conscious when shopping for groceries.”

adv + adj

06. fully conscious

“The patient was fully conscious and able to answer the doctor's questions.”

adv + adj

Noun

07. conscious decision

“It was a conscious decision to move to the countryside for a quieter life.”

adj + noun

Confusables

conscious vs conscience

Conscious is the state of being awake or aware; conscience is the internal moral compass that judges right from wrong.

RememberConscious is about your senses; conscience is about your soul.

Real-World Examples

“Jacques was also conscious his own experience could only take him so far.”
BBC News 15 Aug 2026
“While the authors briefly address AI, they do not take a shared position on whether current systems are conscious.”
ScienceDaily 24 Jun 2026
“We have super strengths and we have other areas we need to be very conscious [of] because we don’t have the elements or the structure that other clubs have.”
The Guardian 14 Aug 2026
“Some research has shown that it can be a conscious choice, and people do it because that's what they see get rewarded.”
Phys.org 13 Aug 2026

Etymology

First use appears c. 1573 in the sense of "aware of wrongdoing".https://web.archive.org/web/20220714064352/https://www.lexico.com/definition/conscious From Latin cōnscius (“conscious, conscious of guilt”), itself from con- (a form of com- (“together”)) + scīre (“to know”) + -us.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Synonyms

Antonyms

Word family

ADJECTIVE

conscious(B2)

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Common
Level
B2 · Upper IntermediateOxford
Updated

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