Here are some of the conditions that "diminish," "attenuate," or "nullify" all together, the guilt otherwise deserved by the commission of a grave moral offense, such as murder or adultery, according to the Catholic Church's infallible teaching of the Christian faith :
"...ignorance, inadvertence, duress, fear, habit, inordinate attachments, and other psychological or social factors..."
"...Unintentional ignorance..."
"...The promptings of feelings and passions..."
"...external pressures or pathological disorders..."
"...destitution, blackmail, or social pressure..."
The presence of any of these, or conditions like them, according to the supreme pastor of the Catholic Church, and so therefore infallibly, render, for the Christian, an otherwise mortal sin venial, because it makes the immoral choice without "full knowledge and deliberate consent."