principle of good faith
A fundamental legal principle in civil law, requiring parties to act honestly and fairly in contractual and other legal relationships.
The principle of good faith is one of the fundamental principles of the Civil Code.
契約の履行には、信義誠実の原則に従う必要がある。
Performance of a contract must follow the principle of good faith.
A compound of 信義 (good faith, fidelity), 誠実 (sincerity, honesty), and 原則 (principle). The term is a direct translation of the legal concept 'principle of good faith' (Treu und Glauben in German law), adopted into Japanese civil law.