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English definition of “conscious”

conscious

adjective uk   /ˈkɒn.ʃəs/ us    /ˈkɑːn-/

conscious adjective (NOTICING)

be conscious of sth/sb B2 to notice that a particular thing or person exists or is present: The tooth doesn't exactly hurt, but I'm conscious of it (= I can feel it) all the time. [+ -ing verb] I think she's very conscious of being the only person in the office who didn't have a university education. [+ that] He gradually became conscious (of the fact) that everyone else was wearing a suit.
See also

conscious adjective (AWAKE)

C1 awake, thinking, and knowing what is happening around you: He's still conscious but he's fairly badly injured. They've brought her out of the operating theatre, but she's not fully conscious yet.figurative humorous "Can I speak to Isobel, please?" "She's still in bed. I'll just go and see if she's conscious (= awake) yet."
Opposite

conscious adjective (INTENTIONAL)

C2 determined and intentional: He's obviously making a conscious effort to be nice to me at the moment. It wasn't a conscious decision to lose weight. It just happened.
consciously
adverb uk   /-li/ us  
I don't think she's consciously rude to people - it's just her manner.
(Definition of conscious adjective from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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