in principle

prin·ci·ple  (prns-pl)

n.

1. A basic truth, law, or assumption: the principles of democracy.

2.

a. A rule or standard, especially of good behavior: a man of principle.

b. The collectivity of moral or ethical standards or judgments: a decision based on principle rather than expediency.

3. A fixed or predetermined policy or mode of action.

4. A basic or essential quality or element determining intrinsic nature or characteristic behavior: the principle of self-preservation.

5. A rule or law concerning the functioning of natural phenomena or mechanical processes: the principle of jet propulsion.

6. Chemistry One of the elements that compose a substance, especially one that gives some special quality or effect.

7. A basic source. See Usage Note at principal.

Idioms:

in principle

With regard to the basics: an idea that is acceptable in principle.

on principle

According to or because of principle.

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[Middle English, alteration of Old French principe, from Latin prncipium, from prnceps, prncip-, leader, emperor; see per¹ in Indo-European roots.]

Thesaurus

Adv.

1.

in principle - with regard to fundamentals although not concerning details; "in principle, we agree" in essence, in theory