5What are the Principles of 5s? 5s is a philosophy applied in the workplace that helps promote efficiency and effectiveness. As one of the core principles of kaizen, 5S lean4 —5— 6: Cardinal: cinq Ordinal: cinquième quint, quinte (anc.) 5 e: Préfixe grec: penta Préfixe latin: quinque Adverbe: cinquièmement Adverbe d'orine latine: quinto