conscience

American  

[kon-shuhns] / ˈkɒn ʃəns /

noun

1. the inner sense of what is right or wrong in one's conduct or motives, impelling one toward right action.

   to follow the dictates of conscience.

2. the complex of ethical and moral principles that controls or inhibits the actions or thoughts of an individual.

3. an inhibiting sense of what is prudent.

   I'd eat another piece of pie but my conscience would bother me.

4. conscientiousness.

5. Obsolete. consciousness; self-knowledge.

6. Obsolete. strict and reverential observance.

---

idioms

1. have something on one's conscience, to feel guilty about something, as an act that one considers wrong.

   She behaves as if she had something on her conscience.

2. in all conscience, Also in conscience.

   1. in all reason and fairness.

   2. certainly; assuredly.

conscience British  

/ ˈkɒnʃəns /

noun

1. 1. the sense of right and wrong that governs a person's thoughts and actions

   2. regulation of one's actions in conformity to this sense

   3. a supposed universal faculty of moral insight

2. conscientiousness; diligence

3. a feeling of guilt or anxiety

   he has a conscience about his unkind action

4. obsolete consciousness

5. 1. with regard to truth and justice

   2. certainly

6. causing feelings of guilt or remorse

---

conscience More Idioms  

1. see have a clear conscience; in conscience.

---

Other Word Forms

• conscienceless
  adjective
• consciencelessly
  adverb
• consciencelessness
  noun
• subconscience
  noun

Etymology

Origin of conscience

First recorded in 1175–1225; Middle English, from Anglo-French, from Latin conscientia “knowledge, awareness, conscience”; equivalent to con- + science

Explanation

A conscience is a built-in sense of what's right and what's wrong. That sick feeling in your stomach after you lied to your brother about borrowing his skateboard? That might be your conscience bothering you. The word conscience contains the word science, which comes from the Latin word scientia, meaning "to know" or "knowledge." You can think of your conscience as your knowledge of yourself, especially when it comes to your own morals, or your feelings about right and wrong. Pangs of conscience, which feel like an uncomfortable inner voice, are helpful when you're trying to decide the right thing to do in a particular situation.

Example Sentences

Bernthal, who plays Sonny, has his own wayward machismo and hapless sensitivity, the very qualities that made Al Pacino unforgettable in the role of the bungling bandit with a Catholic conscience.

From Los Angeles Times • Apr. 29, 2026

However, the government has said it is neutral on the bill and it is being treated by parties as a matter of conscience, meaning they have not instructed their MPs or peers how to vote.

From BBC • Apr. 23, 2026

The judges who are defending the Constitution and the rule of law are courageous examples for pro-democracy Americans and other people of conscience.

From Salon • Apr. 21, 2026

“They rest on considerations that go to the substance of an accused’s position before the law. The public conscience must be satisfied that fairness dominates the administration of justice.”

From Slate • Apr. 20, 2026

It takes longer but that person is destroyed gradually, by his or her own conscience.

From "Endgame" by Frank Brady

Related Words

• shame