ten‧et /ˈtenət, ˈtenɪt/ 
 noun [countable][
Date: 1500-1600; 
Language: Latin; 
Origin:  'he or she holds', from tenere;  ⇒ tenor]
 a principle or belief, especially one that is part of a larger system of beliefs
central/basic/fundamental etc tenet one of the basic tenets of democracytenet of
 one of the basic tenets of democracytenet of the main tenet of his philosophy
 the main tenet of his philosophy  [TahlilGaran] Dictionary of Contemporary English ▲