Toxic Code
Noun · Slang & Abbreviations
Definitions
Code that causes harm every time people touch it, whether through hidden coupling, dangerous side effects, or chronic unreliability. In engineering slang, toxic code spreads fear through a team.
In plain English: Code that repeatedly causes harm or trouble when people work on it.
Example: "The invoicing module had become toxic code, with even tiny edits routinely triggering strange regressions in unrelated reports."