Clarity · nuanced · v4.6.1

CLR-05

Avoid confusing double negatives that make the reader work to parse the meaning. Constructions like 'not irreversible' or 'not uncommon' should be rewritten as direct statements. Natural phrasing like 'can't proceed without' is acceptable when it reads clearly.

Pass example

This action is reversible.

Fail example

This action is not irreversible.

Relevant content types

Sources

Style guides that shaped this standard. Each is listed on /sources with its license and opt-out path.

  • GOV.UK Style Guide
  • 18F Content Guide

Version history

  1. v4.6.1 · 2026-04-23

    Per-standard version tracking introduced. Every standard starts at the library version current at introduction; bump per-standard when the rule text, examples, or content_type_notes change.

Related standards

Other standards in the Clarity category.

  • CLR-01 — Use plain language. Avoid jargon, technical terms, or insider language unless the audience requires it.
  • CLR-02 — Lead with the most important information. Put the action or outcome first.
  • CLR-03 — Use short sentences. Aim for 15-20 words per sentence. Sentences over 25 words should almost always be split.
  • CLR-04 — One idea per sentence. Don't chain multiple concepts together.

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