Principle – Basic truth or idea as a foundation for a belief system or reasoning

(Pronounced prin-sip-uhl)

To remember the definition of the word principle, use the following mnemonic:

The prince had a tipple with his supper every night. He believed in a basic truth that a little alcohol is good for you.

Examples of principle in a sentence

Democracy operates on the principle that everyone should be treated equally. 

In principle, her idea was realistic and based on sound science.

He refused on principle to agree to the terms of the treaty.