1. Principle (noun) Definition Moral rule guiding behaviour.
Scientific law concerning the work of something.

2. Principle (noun) Word origin
Late Middle English: from Old French, from Latin principium ‘source’, principia (plural) ‘foundations’, from princeps, princip- ‘first, chief’.

3. Principle (noun) Synonyms
Honour, integrity, morality, ideals, conscience, scruples, decency, virtue
Rule, law, formula, canon, dictum, axiom, tenet

4. Principle (noun) Put it in a sentence
She didn’t cheat on her test because she was was a person of principle who knew the difference between right and wrong.
After teaching the students the basic principles of chemistry, the science teacher was able to teach the students more advanced skills.

5. Principle
(noun)
How many times can you use the word ‘principle’ this week?