Explanation of vs. Explanation for – Which is Correct?
Use “explanation of” when you describe or clarify a subject, concept, or process. Use “explanation for” when you give a reason for an event, action, problem, or decision. Both constructions are correct; the preposition changes what follows: the topic being explained versus the reason being supplied in each case clearly.
Explanation of or Explanation for – Which is Correct?
Both “explanation of” and “explanation for” are correct American English expressions. The difference is the relationship between explanation and the noun that follows it.
Use “explanation of” when the following noun is the subject, idea, process, or situation being described. Use “explanation for” when the following noun is the event, action, result, or problem that needs a reason.
- Explanation of the process: The process itself is being described.
- Explanation for the delay: A reason for the delay is being provided.
The Best Trick to Remember the Difference
Use this simple question: What is being explained? If the answer is a topic or concept, use of. If the answer is a problem or event that needs a reason, use for.
Try the swap test: replace the phrase with “description of” or “reason for.” If “description of” makes sense, choose of. If “reason for” makes sense, choose for.
| Word | Part of Speech | Meaning | Example |
|---|---|---|---|
| of | Preposition | Identifies the subject being described or clarified | The teacher gave an explanation of photosynthesis. |
| for | Preposition | Introduces the reason for an event, action, or result | The manager offered an explanation for the delay. |
How to Use Of
In the phrase “explanation of”, of connects the word explanation to the subject being explained. This construction is common in academic, technical, professional, and everyday writing. It often introduces a concept, system, theory, rule, term, or procedure.
The phrase does not necessarily suggest that something went wrong. It simply indicates that someone is describing or clarifying a subject.
Example 1: The guide includes an explanation of how the machine works.
Example 2: The professor provided a detailed explanation of the economic theory.
Example 3: Please read the explanation of the new safety procedure.
Etymology of the word Of
Of comes from Old English of, meaning “from,” “away from,” or “out of.” Over time, its uses expanded to show relationships such as possession, connection, composition, and reference. In “explanation of,” it establishes a connection between the explanation and its subject.
How to Use For
In the phrase “explanation for,” for introduces the reason, cause, or justification associated with something. It is especially common with events, actions, absences, mistakes, changes, delays, decisions, and unexpected results.
This construction often answers the question “Why did this happen?” It can be used in casual conversation, formal writing, workplace communication, journalism, and academic contexts.
Example 1: The company issued an explanation for the sudden price increase.
Example 2: She offered an explanation for missing the meeting.
Example 3: Scientists are searching for an explanation for the unusual readings.
Etymology of the word For
For comes from Old English for, a word associated with purpose, direction, cause, and support. Its meaning gradually developed into the many modern uses seen in phrases involving reasons, recipients, goals, and benefits. In “explanation for,” it introduces the reason connected to an event or situation.
Related Concepts
Understanding the difference between a subject and a reason makes it easier to choose the correct preposition in this phrase.
- Prepositions: Prepositions show relationships between words. In these expressions, of links an explanation to its subject, while for links an explanation to a reason or event.
- Cause and effect: A cause explains why something happened, while an effect is the result. “An explanation for the accident” asks about its cause.
- Object of explanation: The object is the thing being described or clarified. “An explanation of the rule” identifies the rule as the object.
- Justification: A justification defends or supports an action or decision. “An explanation for the decision” may function as a justification.
Examples from Media and Literature
Writers and speakers use both constructions according to whether they are describing a subject or giving a reason:
- Science documentaries: A presenter may give “an explanation of how black holes form,” focusing on a scientific process.
- News reports: A journalist may discuss “the official explanation for the power outage,” focusing on the cause of an event.
- Textbooks: A chapter may contain “an explanation of the water cycle,” describing a concept for learners.
- Workplace communication: An employee might provide “an explanation for the missed deadline,” offering a reason for a problem.
- Detective stories: A character may demand “an explanation for the missing evidence,” asking why the situation occurred.
Practice Exercises
Choose the correct word to complete each sentence: of or for.
- The lecturer gave an explanation ___ the legal principle.
- The customer requested an explanation ___ the additional charge.
- The manual contains a clear explanation ___ how to install the software.
- The athlete offered an explanation ___ leaving the competition early.
- The article provides an explanation ___ the differences between the two systems.
Answer Key
- of — The legal principle is the subject being explained.
- for — The additional charge is the event or result requiring a reason.
- of — The installation process is being described.
- for — Leaving early is the action being explained or justified.
- of — The differences are the subject being clarified.
Of Synonyms
| Synonym | Definition |
|---|---|
| about | Concerning or related to a subject |
| concerning | Regarding a particular topic |
| describing | Giving details about something |
| regarding | With reference to a subject |
For Synonyms
| Synonym | Definition |
|---|---|
| reason for | The cause of an event or situation |
| justification for | A defense or rationale for an action or decision |
| cause of | The factor that produces an event or result |
| rationale for | The underlying reasoning behind a choice or action |
Frequently Asked Questions
Question 1: Is it “an explanation of” or “an explanation for”?
Both are grammatically correct. Use “an explanation of” for a subject being described, and “an explanation for” for a reason connected to an event, action, or problem.
Question 2: Is “explanation for why” correct?
Yes. “An explanation for why the project failed” is acceptable because for introduces the situation requiring a reason. In formal writing, “an explanation of why” is also common and may focus more directly on the content of the explanation.
Question 3: What is the difference between “explanation of the rule” and “explanation for the rule”?
“Explanation of the rule” means a description or clarification of the rule. “Explanation for the rule” means the reason why the rule exists.
Question 4: Can “of” and “for” be used interchangeably here?
Not always. Replacing one with the other can change the meaning. “An explanation of the decision” describes the decision, while “an explanation for the decision” gives the reason behind it.
Conclusion
Both “explanation of” and “explanation for” are correct, but they serve different purposes. Choose of when introducing the topic being described, such as “an explanation of the process.” Choose for when introducing a reason, such as “an explanation for the delay.” Pro Tip: Using the precise preposition makes professional writing clearer and strengthens your credibility.
