principle

principle /ˈprɪnsəpəl/ noun
plural principles
principle
/ˈprɪnsəpəl/
noun
plural principles
Britannica Dictionary definition of PRINCIPLE
1 
: a moral rule or belief that helps you know what is right and wrong and that influences your actions
[count]
[noncount]
2 
[count] : a basic truth or theory : an idea that forms the basis of something
3 
[count] : a law or fact of nature that explains how something works or why something happens

in principle

1 
— used to say that something which has not yet happened or been done should be possible according to what is known
2 
: in a general way and without giving attention to details