# Coupling Meaning & Pronunciation: Tech English Practice (2026)

> The degree to which one software module or component depends on another.

- **Term:** coupling
- **Part of speech:** noun
- **Pronunciation:** /ˈkʌplɪŋ/
- **English level (CEFR):** B2
- **Register:** Neutral, Both
- **Region:** US and UK
- **Topic:** [Code and Git terms](https://app.speaktechenglish.com/learn/topics/software-development-terms.md)
- **Lesson:** https://app.speaktechenglish.com/learn/coupling
- **Last updated:** 2026-10-27

## Meaning

The degree to which one software module or component depends on another. High coupling means modules are tightly connected and changes to one affect others; low coupling means modules are independent.

In software engineering, coupling describes how much one piece of code relies on the internal details of another piece. When modules have high coupling, they are interdependent, making the codebase brittle and difficult to modify without breaking things elsewhere. When modules have low coupling, they are loosely connected through clear interfaces, allowing teams to change and test components independently. This concept is fundamental to designing scalable and maintainable systems. Teams working on large codebases prioritize reducing coupling to improve code quality, testability, and deployment speed.

## When you hear it

During architecture reviews, teams assess the coupling between microservices to ensure they can be deployed independently.

## Examples

- **in a code review:** "This database query is tightly coupled to the business logic. We should move it to a separate layer."
- **in an architecture meeting:** "The main issue with our monolith is high coupling between the payment and inventory modules."
- **in a standup:** "We refactored the API to reduce coupling, so now the mobile team can work independently."

## What native speakers say

- "We have too much coupling between these services."
- "The goal is to reduce coupling and increase cohesion."
- "Tight coupling makes refactoring painful."

## Common mistakes

- ✗ "We need to coupling the two functions together." → ✓ "We need to reduce the coupling between these two functions." (Coupling is not a verb meaning to connect; it is a noun describing the level of dependency.)
- ✗ "The coupling is working well now." → ✓ "We have achieved low coupling, which is working well." (Coupling itself does not work or not work. You assess whether the level of coupling is good or bad.)
- ✗ "Let us add more coupling to make it faster." → ✓ "Let's reduce coupling to improve maintainability." (More coupling typically makes code harder to maintain and test, not faster.)

## Be careful

Coupling is an architectural concept; do not confuse it with simply connecting two things together or romantic pairing. It refers specifically to code dependency.

## Word forms

| Part of speech | Word | Example |
| --- | --- | --- |
| noun | coupling | High coupling in this codebase is slowing us down. |
| adjective | coupled | These components are tightly coupled and difficult to test independently. |


## Collocations

- **tight coupling**: Used when modules are heavily dependent on each other; usually considered a problem.
- **loose coupling**: Used when modules have minimal dependencies; generally a design goal.
- **reduce coupling**: The common action phrase meaning to minimize dependencies between modules.
- **high coupling**: Describes significant interdependency between components.
- **low coupling**: Describes minimal interdependency; promotes modularity and testability.

## Synonyms

- **interdependency**: More general term; coupling is the technical term preferred in software architecture.
- **dependency**: Narrower term referring to what one module depends on; coupling describes the strength of that relationship.
- **interconnectedness**: Broader term; coupling is more specific to code architecture.

## Opposites

- decoupling
- independence
- modularity

## Practice

This lesson has 4 practice exercises with instant feedback on the page: https://app.speaktechenglish.com/learn/coupling

## FAQ

### What does coupling mean in software engineering?

Coupling measures how much one software module or component depends on another. High coupling means modules are tightly connected and interdependent. Low coupling means they are independent with minimal connections. In software design, teams aim for low coupling because it makes code easier to test, maintain, and modify.

### How do you use coupling in a sentence at work?

You typically use it with adjectives like tight, loose, high, or low. For example: We need to reduce coupling between the authentication and payment modules. Or: This service has tight coupling to the database, making it hard to scale.

### Is coupling a formal or informal term?

Coupling is a formal technical term used in software architecture and engineering. It is standard terminology in code reviews, architecture discussions, and technical documentation. While not slang, it is professional and expected vocabulary in tech companies.

### What is the opposite of coupling?

The opposite concepts are decoupling, modularity, and independence. Decoupling is the process of reducing coupling. A well-designed system has low coupling and high cohesion.


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