What Does “Fathom sth out” Mean?
“Fathom sth out” means to understand or figure out something that is difficult or confusing.
Introduction
The phrase “Fathom sth out” is a useful phrasal verb in English that helps express the action of trying to understand complex or puzzling information. When you “fathom something out,” you work to comprehend it fully, often after some effort. This phrase is common in both spoken and written English, especially when discussing problems, ideas, or situations that are not immediately clear. Understanding the fathom sth out meaning can improve your ability to describe the process of solving mysteries or clarifying confusion in everyday conversations.
Quick Info Box
- Phrasal verb: fathom sth out (fathom something out)
- Type: transitive
- Level: B2 (Upper-Intermediate)
- Short meaning: to understand or figure out something difficult or confusing
Structure (Grammar Rules)
“Fathom sth out” is a separable phrasal verb. This means the object can come between the verb and the particle or after the particle.
- Pattern 1: fathom something out
- Pattern 2: fathom out something
Example: “I can’t fathom this problem out” or “I can’t fathom out this problem.” Both are correct, but the first is more common.
How to Use “Fathom sth out”?
Use “fathom sth out” when you want to describe the process of understanding something difficult. It often involves effort or deep thinking. It is usually used with nouns representing ideas, problems, or situations.
For example, you might say, “She tried to fathom the instructions out,” meaning she tried hard to understand the instructions.
Examples
Here are some examples to help you see how “fathom sth out” is used in sentences:
- It took me hours to fathom the software’s settings out.
- He couldn’t fathom out why the project failed despite careful planning.
- We need to fathom out the reasons behind the sudden drop in sales.
- Can you fathom out what this message means?
- Scientists are still trying to fathom out the cause of the strange phenomenon.
These examples show how the phrase is used to express figuring out or understanding complex matters.
Common Mistakes
Many learners confuse the placement of the object or misuse the verb form. Here are some common mistakes and corrections:
- Incorrect: I fathom out this problem.
- Correct: I fathom this problem out.
- Incorrect: She fathomed outed the solution.
- Correct: She fathomed out the solution.
- Incorrect: Can you fathom this out?
- Correct: Can you fathom this out? (This is correct, but placing the object between “fathom” and “out” is more common.)
Differences / Synonyms
When you want to express understanding something difficult, you can use similar phrasal verbs like “figure out,” “make out,” or “work out.” However, there are subtle differences:
- Figure out: Very common for solving problems or understanding situations.
- Make out: Often used for hearing or seeing clearly, but can mean understanding.
- Work out: Used for solving problems, often with effort.
- Fathom out: Emphasizes deep understanding, often of something mysterious or confusing.
For example, “I can’t figure out why he left” and “I can’t fathom out why he left” are similar, but “fathom out” suggests a deeper level of puzzlement.
Common Collocations
“Fathom sth out” is often used with nouns related to problems, reasons, meanings, or mysteries. Here are some common collocations:
- fathom the meaning out – to understand what something means
- fathom the reason out – to discover why something happened
- fathom the problem out – to understand a difficult issue
- fathom the mystery out – to solve a puzzling situation
- fathom the truth out – to uncover the real facts
Real-life Dialogue
Here is a short conversation using “fathom sth out”:
Anna: I don’t understand this math problem at all.
Ben: Yeah, it’s tricky. Let’s try to fathom it out together.
Anna: Good idea! Maybe if we break it down step by step, we can fathom the solution out.
Practice
Try to complete the sentences with the correct form of “fathom sth out”:
- 1. It’s hard to __________ why she didn’t come to the meeting.
- 2. We need to __________ the instructions before starting the project.
- 3. Can you help me __________ this problem __________?
- 4. Scientists are trying to __________ the cause of the strange weather pattern.
FAQs
- What does “fathom sth out” mean?
It means to understand or figure out something difficult or confusing. - Is “fathom out” separable?
Yes, the object can come between “fathom” and “out” or after “out.” - Can I use “fathom out” in formal writing?
Yes, but it’s more common in spoken or informal contexts. - What is the difference between “fathom out” and “figure out”?
“Fathom out” suggests deeper understanding, while “figure out” is more general for solving problems. - Can “fathom out” be used with any object?
It’s usually used with abstract nouns like problems, reasons, or mysteries.

