adjective
principled
PRIN-suh-puld/ˈprɪnsəpld/
Based on firm standards of belief or conduct.
The principled inspector refuses the bribe and keeps the dangerous staircase closed.

Etymology
A principle developed from a foundation or basic truth into a rule of conduct. Someone principled is grounded in such rules, specifically good or right ones.
In context
practical reasons in terms of the, uh, effects on Israeli and American academics. There are principled reasons which reflect um a desire to maintain academic freedom worldwide which really does have to mean free interchange.
More examples
- His principled refusal to cheat costs him the prize.
- We need a principled approach to protecting personal information.
- They remain principled even when breaking the rules would benefit them.
Forms
principled
principle noun — A basic belief or standard guiding conduct.
unprincipled adjective — Lacking firm moral or ethical standards.