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1. Motivation based on ideas of right and wrong
   - ethical motive, morals, morality
    
2. The philosophical study of moral values and rules
   - moral philosophy

1. The principles of right and wrong that are accepted by an individual or a social group
   "the Puritan ethic";
   - moral principle, value-system, value orientation
    
2. A system of principles governing morality and acceptable conduct
   - ethical code

Type of: motivation, motive, need, philosophy, principle, system, system of rules

Encyclopedia: Ethics Ethics, Institutions, and the Right to Philosophy Ethics, institutions, and the right to philosophy