bug

//bʌɡ//

Nouns
Animals
B1

Translation

bug (software defect)

Definition

In software development, a bug is an error, flaw, or fault in a computer program that causes it to produce an incorrect or unexpected result, or to behave in unintended ways. Bugs can arise from mistakes in the source code, design, or system architecture, and they often require debugging to identify and fix. The term is commonly used in both professional and casual contexts to describe issues ranging from minor glitches to critical failures that affect functionality or security.

Example

  • The developer spent hours trying to find the bug that caused the app to crash.

  • A simple bug in the login code allowed users to bypass authentication.

  • The software update introduced a new bug that affected the payment system.

  • She reported a bug in the spreadsheet program that miscalculated totals.

  • The team fixed a critical bug just before the product launch.

  • A common bug in early versions of the game caused characters to get stuck in walls.

  • The developer used a debugger to trace the bug back to a memory leak.

  • After the bug was patched, the website's performance improved significantly.

  • The bug caused the application to display incorrect data to users.

  • He accidentally introduced a bug while refactoring the codebase.

Synonyms

defect
glitch
error
fault
flaw

Other meanings

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