Without any qualms of conscience; not feeling guilty for one's misdeeds.

A blank round of ammunition issued to one or more members of a firing squad without telling them, so that each person in the squad knows there is a chance that they themselves did not fire the lethal shot.

plural of conscience round

making somebody feel guilty.

Alternative form of in all conscience

(obsolete) Alternative form of in conscience

(religion) A review of one's thoughts, words, actions, and omissions for the purpose of ascertaining their conformity with, or deviation from, the moral law.

To give one's frank and honest opinion.

Lacking a conscience; unscrupulous or ruthless.

in a conscienceless manner