Principal: Definition, Meaning, and Examples

Last Updated on
July 29, 2025

1. Principal (noun): The head or leader of an organization, especially a school or an institution.
2. Principal (noun): A sum of money that is invested or loaned, excluding the interest or profits.
3. Principal (adjective): Most important or primary in importance, rank, or significance.

The word "principal" has several primary meanings depending on the context in which it is used. Most commonly, it refers to a person who holds a leading position, such as the head of a school or a key player in an organization. It can also mean the original amount of money invested or loaned, on which interest is calculated. In legal contexts, "principal" may refer to a person who authorizes an agent to act on their behalf. To fully understand the nuances of this word, let's explore its definitions, pronunciation, and usage.

"Principal" Definition: What Does "Principal" Mean?

The word "principal" can refer to an individual in charge of an institution, a financial term related to investment, or an adjective used to indicate the highest importance. Here are its primary meanings.

Definition of "Principal": Leader or Head

As a noun, "principal" commonly refers to the head or leader of an organization, especially in educational contexts such as the principal of a school.

Definition of "Principal": Financial Term

In finance, "principal" refers to the initial sum of money invested or borrowed, excluding interest or additional earnings.

Definition of "Principal": Most Important

As an adjective, "principal" denotes something of primary importance, ranking above all others in significance or responsibility.

Parts of Speech

"Principal" serves as both a noun and an adjective. As a noun, it can refer to a person, typically a leader, or a financial concept related to money. As an adjective, it emphasizes something's primary importance or rank. These dual functions make "principal" adaptable across various contexts.

How to Pronounce "Principal"?

The word "principal" is pronounced as "PRIN-suh-puhl" with three syllables, where the stress falls on the first syllable. The first syllable "prin" begins with the "p" sound followed by "rin" as in "ring," while the second syllable "suh" is unstressed, and the final syllable "puhl" uses a soft "l" sound. The word commonly causes confusion with its homophone "principle," though they have distinct meanings and uses.

Phonetic Pronunciation: /ˈprɪnsəpəl/

Synonyms of "Principal": Other Ways to Say "Principal"

Synonyms for "principal" can help convey the same ideas with different expressions.

  • Leader
  • Head
  • Chief
  • Director
  • Executive
  • Master
  • Key
  • Primary

Antonyms of "Principal": Other Ways to Say "Principal"

Antonyms provide the opposite of "principal," often highlighting secondary or less important roles.

  • Subordinate
  • Assistant
  • Secondary
  • Minor
  • Subservient
  • Junior
  • Auxiliary

Examples of "Principal" in a Sentence

Here are ten examples illustrating the use of "principal" in various contexts:

1. The principal of the school welcomed the new students at the assembly.
2. The principal amount of the loan was due at the end of the term.
3. The principal reason for the meeting was to discuss upcoming budget cuts.
4. She is the principal designer behind the company's latest collection.
5. The principal of the bank gave a speech about future investments.
6. His principal responsibility was managing the team’s daily operations.
7. The principal balance on the mortgage must be paid off before the interest can be applied.
8. The principal of the corporation made the final decision on the merger.
9. The principal causes of the project's failure were poor planning and lack of resources.
10. She is the principal investigator in the medical research study.

Frequency of Use

The frequency of use of the word "principal" is relatively high, particularly in educational and financial contexts. According to Google's Ngram Viewer, the usage of "principal" has remained relatively consistent since the 1800s, with a slight increase in usage in the mid-1900s, likely due to the expansion of education and financial institutions.

Variants of "Principal"

Here are variants of "principal" that reflect its use in different contexts:

1. Principle: A fundamental truth or law that guides actions, distinct from "principal" in meaning but often confused.
2. Principality: A state or territory ruled by a prince or similar leader.
3. Principled: Having high moral standards or integrity.

Related Terms to "Principal"

Related terms provide further insight into the concepts linked to "principal."

1. Authority
2. Leadership
3. Headship
4. Capital
5. Investment
6. Chief
7. Executive
8. Ownership
9. Responsibility
10. Precedence

Etymology: History and Origins of "Principal"

The word "principal" originates from the Latin word "principalis," meaning "first in importance" or "chief." It first appeared in the English language around the 14th century, often describing a leading figure or authority. In Middle English, it referred to a leader or ruler, aligning with its Latin roots. During the Renaissance, it started appearing in financial contexts to denote the main sum of money. Its consistent use throughout centuries reflects its association with primary importance and leadership.

Derivatives and Compounds of "Principal"

Here are derivatives and compounds of "principal":

1. Principality: A territory governed by a prince or principal ruler.
2. Principled: Acting with strong moral guidelines or ethics.
3. Principle: A fundamental law or truth.

Common Misspellings of "Principal"

The most common spelling error for "principal" involves confusion with "principle":

1. Principle
2. Pricipal
3. Principel

10 Idioms Similar to "Principal"

These idioms provide figurative expressions related to "principal" and leadership.

1. Head of the class
2. In the driver's seat
3. Calling the shots
4. At the helm
5. Top dog
6. Leading the charge
7. In command
8. First in line
9. The big cheese
10. In the lead

10 Common Questions About "Principal"

Here are answers to common questions about "principal":

1. What does "principal" mean?

"Principal" refers to the leader or head of an organization, an amount of money in finance, or something of primary importance.

2. What is the plural form of "principal"?

The plural form of "principal" is "principals," typically used to refer to multiple leaders or financial amounts.

3. How is "principal" used in finance?

In finance, "principal" refers to the original sum of money invested or borrowed, excluding any interest or profit.

4. Can "principal" refer to a teacher?

Yes, "principal" is often used to refer to the head or leader of a school or educational institution.

5. What is the difference between "principal" and "principle"?

"Principal" refers to a leader or an amount of money, while "principle" refers to a fundamental law or truth.

6. What does "principal" mean in a company?

In a company, "principal" typically refers to a senior leader, such as a managing director or the primary person in charge.

7. Is "principal" used in everyday conversation?

Yes, "principal" is used regularly, especially in educational, financial, and business contexts.

8. Can "principal" be used to describe something other than a person?

Yes, "principal" can describe an amount of money, a primary factor, or something of chief importance.

9. How do you pronounce "principal"?

"Principal" is pronounced /ˈprɪnsəpəl/, with emphasis on the first syllable.

10. What is a "principal" in a school setting?

A "principal" in a school setting is the head or leader of the school, responsible for administration and leadership.

Conclusion

"Principal" refers to the primary leader, the main financial amount, or the most significant aspect in various contexts. Understanding the term's use and flexibility is important for clear communication in professional and casual settings. Keep exploring word definitions to expand your knowledge and refine your language skills.

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