tenet

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The Word of the Day for October 10 is: 

tenet   \TEN-ut\   noun
     : a principle, belief, or doctrine generally held to be 
true; especially : one held in common by members of an 
organization, movement, or profession 

Example sentence:
     Aspiring writers are often advised to follow one great 
literary tenet: write what you know.

Did you know?
     In Latin, "tenet" is the third person singular of the 
verb "tenere" ("to hold") and means "he/she/it holds." It is 
believed to have been borrowed into English around 1600 from 
Latin writings in which it often introduced the opinions held by 
a particular church or sect. There are a good many "tenere" 
descendants in English, including some words that end in "-tain" 
("abstain," "contain," "maintain," and "sustain," to name a 
few), and others that begin with "ten-" (such as "tenable," 
meaning "capable of being held," and "tenacious").