Principle Definition

prĭnsə-pəl
principles
noun
principles
The ultimate source, origin, or cause of something.
Webster's New World
A fundamental truth, law, doctrine, or motivating force, upon which others are based.
Moral principles.
Webster's New World
A natural or original tendency, faculty, or endowment.
Webster's New World
A rule of conduct, esp. of right conduct.
Webster's New World
The collectivity of moral or ethical standards or judgments.
A decision based on principle rather than expediency.
American Heritage
verb

To equip with principles; to establish, or fix, in certain principles; to impress with any tenet or rule of conduct.

Wiktionary
idiom
in principle
  • With regard to the basics:

    an idea that is acceptable in principle.

American Heritage
on principle
  • According to or because of principle.
American Heritage
in principle
  • theoretically or in essence
Webster's New World
on principle
  • because of or according to a principle
Webster's New World

Other Word Forms of Principle

Noun

Singular:
principle
Plural:
principles

Idioms, Phrasal Verbs Related to Principle

Origin of Principle

  • Middle English alteration of Old French principe from Latin prīncipium from prīnceps prīncip- leader, emperor per1 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Old French principe, from Latin principium (“beginning, foundation"), from princeps (“first"); see prince.

    From Wiktionary

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