noun
compunction
kum-PUNGK-shun/kəmˈpʌŋkʃn/
A feeling of guilt or hesitation about doing something wrong.
He feels compunction beside the broken vase.

Etymology
The central image is a pricking or stinging of the conscience, with com- perhaps intensifying the sting. The word originally conveyed strong remorse or contrition, rather than simply an uneasy guilty feeling.
In context
Then they would kill her with as little compunction as they would a fly," he said. "Ah! you do not know the callousness of those people.
More examples
- She had compunctions about revealing the secret.
- A flicker of compunction delayed his reply.
- The company acted without compunction.
Forms
compunction · compunctions