| A | B |
| consequentialism | an ethical system that determines good or evil from the consequences that follow an act. |
| circumstances | moral conditions that are added to modify the moral nature of an action. |
| end (of an action) | the first goal of the intention and the purpose pursued in an action. |
| intention (of an action) | a movement of the will toward the end, the goal of the activity. |
| object (of an action) | a good toward which the will directs itself. the object of an action should not be confused with the intention a person has when performing the act. |
| proportionalism | an ethical system that deduces the moral value of an act from the proportion of good and evil effects. |
| actual sin | sins against God committed by the deliberate will of the individual. |
| complete consent | consent sufficiently deliberate to be a personal choice. |
| contrition | sincere sorrow for having offended God and hatred for the sins we have committed with a firm purpose of sinning no more. |
| external sin | sin committed by word or deed. |
| grave matter | a serious violation of the natural law. |
| habitual sin | the permanent state of culpability caused by the frequent commission of actual sins. |
| material sin | an action that is sinful but does not admit culpability because of ignorance. |
| secularism | a philosophy that rejects any reference to God or religion and seeks the improvement of human society through purely human means. |
| sin of commission | a choice to do an evil act. |