Look-alikes

Conscious vs Conscience

What is the difference between conscious and conscience?

Conscious is an adjective meaning awake or aware. Conscience is a noun: the inner voice that tells you right from wrong.

Conscious vs Conscience at a glance

  • conscious

    /ˈkɒnʃəs/ · adjective

    Awake and able to understand what is happening, or aware of something.

    • The driver was conscious when the ambulance arrived.
    • I'm very conscious of how much time I spend on my phone.
  • conscience

    /ˈkɒnʃəns/ · noun

    The feeling inside you that tells you what is right and wrong.

    • My conscience wouldn't let me keep the money I found.
    • She has a guilty conscience about lying to her friend.

How to remember it

Conscience has the word 'science' inside it, and both are nouns. Conscious ends in -ous like other adjectives: famous, nervous, serious.

Good to know

They sound very close. The only difference is the ending: conscious ends /-ʃəs/, conscience ends /-ʃəns/ with an n. Related words: consciousness (being awake or aware) and conscientious (/ˌkɒnʃiˈenʃəs/, careful and hard-working).

Common mistakes

  • Wrong: He was hit on the head but stayed conscience.

    Right: He was hit on the head but stayed conscious.

  • Wrong: I have a clear conscious – I did nothing wrong.

    Right: I have a clear conscience – I did nothing wrong.

Quick quiz

  1. 1.After the operation, it took an hour before he was fully .

  2. 2.If you do the right thing, you'll have a clear .

  3. 3.More people are becoming of the need to save energy.

Pick the right word for each gap.