conscious

American  

[kon-shuhs] / ˈkɒn ʃəs /

adjective

1. aware of one's own existence, sensations, thoughts, surroundings, etc.

2. fully aware of or sensitive to something (often followed byof ).

   conscious of one's own faults; He wasn't conscious of the gossip about his past.

   Synonyms:

   percipient, knowing

3. having the mental faculties fully active.

   He was conscious during the operation.

4. known to oneself; felt.

   conscious guilt.

5. aware of what one is doing.

   a conscious liar.

6. aware of oneself; self-conscious.

7. deliberate; intentional.

   a conscious insult; a conscious effort.

8. acutely aware of or concerned about.

   money-conscious; a diet-conscious society.

9. Obsolete. inwardly sensible of wrongdoing.

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noun

1. Psychoanalysis. the conscious, the part of the mind comprising psychic material of which the individual is aware.

conscious British  

/ ˈkɒnʃəs /

adjective

1. 1. alert and awake; not sleeping or comatose

   2. aware of one's surroundings, one's own thoughts and motivations, etc

2. 1. aware of and giving value or emphasis to a particular fact or phenomenon

      I am conscious of your great kindness to me

   2. ( in combination )

      clothes-conscious

3. done with full awareness; deliberate

   a conscious effort

   conscious rudeness

4. 1. denoting or relating to a part of the human mind that is aware of a person's self, environment, and mental activity and that to a certain extent determines his choices of action

   2. ( as noun )

      the conscious is only a small part of the mind

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Related Words

Conscious, aware, cognizant refer to an individual sense of recognition of something within or without oneself. Conscious implies to be awake or awakened to an inner realization of a fact, a truth, a condition, etc.: to be conscious of an extreme weariness. Aware lays the emphasis on sense perceptions insofar as they are the object of conscious recognition: He was aware of the odor of tobacco. Cognizant lays the emphasis on an outer recognition more on the level of reason and knowledge than on the sensory level alone: He was cognizant of their drawbacks.

Other Word Forms

• consciously
  adverb
• consciousness
  noun
• half-conscious
  adjective
• half-consciousness
  noun
• nonconscious
  adjective
• nonconsciousness
  noun
• overconscious
  adjective
• overconsciousness
  noun
• quasi-conscious
  adjective

Etymology

Origin of conscious

First recorded in 1625–35; from Latin conscius “sharing knowledge with,” equivalent to con- con- + sci- (stem of scīre “to know”; see science) + -us -ous; cf. nice

Explanation

Conscious is an adjective that simply means alert and awake. If you fall from a tree and smack your head on the side of the wheelbarrow, there's a good chance you won't be conscious afterward. Conscious is a Latin word whose original meaning was “knowing" or "aware.” So a conscious person has an awareness of her environment and her own existence and thoughts. If you're "self-conscious," you're overly aware and even embarrassed by how you think you look or act. But that sounds better than being unconscious, or totally unaware and out of it.

Example Sentences

Dave Mazza, CEO of Roundhill Investments, told Barron’s that this was a conscious decision and mirrors the concentrated nature of the memory chip market.

From Barron's • May 15, 2026

Some of the rituals Mr. Feiler encounters are conscious modifications of existing rites.

From The Wall Street Journal • May 15, 2026

“It certainly wasn’t conscious, like ‘This year I’m going to play musicians,’” Sharpe says.

From Los Angeles Times • May 15, 2026

The discovery highlights how living organisms can create highly organized systems without conscious planning or measurement.

From Science Daily • May 14, 2026

Once again, he was conscious of how sulky and childish he sounded.

From "The School for Whatnots" by Margaret Peterson Haddix

Related Words

• attentive
• aware
• certain
• cognizant
• informed
• keen
• mindful
• responsive
• sensible
• sure
• vigilant
• watchful