# description Human-readable, stable string representation of this error. ``` var description: String { get } ``` ## Return Value A short sentence describing the error. Associated-value cases include their payload in a sensible template (e.g. `"Tor failed to start: "`). ## Discussion Each case renders to a concise English sentence suitable for log lines, CLI diagnostics, and fallback UI labels. Strings are deliberately **stable across minor releases** — do not pattern-match against them; pattern-match against the enum case instead. > Important: This is **not** a `LocalizedError.errorDescription`; > Apple UI surfaces that call `error.localizedDescription` will > fall back to the opaque case name. Render via `"\(error)"` or > `error.description` when user-facing copy is needed.