Custom Dictionary

What a custom dictionary changes

A custom dictionary lets people add approved terms that a generic spellchecker would otherwise mark as errors. In practice, that makes technical drafting faster and less noisy, while preserving the value of spellcheck for genuine typos, inconsistent terminology, and suspicious-looking words that still deserve a second look.

Why teams use it in cybersecurity writing

Security teams often write about product names, acronyms, commands, internal project labels, threat names, and control terminology that are valid in context but uncommon in general language. A custom dictionary reduces repeated false positives so writers can focus on clarity, accuracy, and review quality instead of constantly overriding the same benign terms.

It is most useful when a team has stable vocabulary and a clear approval process for adding terms. Without that discipline, the dictionary can become a hiding place for misspellings, variant spellings, or terms that should have been standardised elsewhere in the content workflow.

How a custom dictionary affects review quality

The main benefit is precision: legitimate specialised words stop interrupting the editing flow, but the tool still has a chance to flag unexpected language patterns. That balance matters because spellcheck is not only a productivity feature; it is also a lightweight consistency check that can reveal copy errors, copied text, or terminology drift.

Well-managed dictionaries support editorial consistency across teams, documents, and templates. Poorly managed ones do the opposite by making the tool less sensitive to the kinds of mistakes it is supposed to catch, especially when authors add broad or ambiguous entries instead of only the terms they truly need.

What to include and what to avoid

A good custom dictionary usually contains domain terms that are consistently correct, such as product names, internal acronyms, and recurring technical labels. It should not be used to excuse words that are merely common in one document but unclear in the wider corpus, or to suppress every unfamiliar term that appears during drafting.

For security teams, the most useful dictionary entries are the ones that reduce editing friction without weakening review discipline. The goal is to make expected terminology easier to write, not to dull the editor's ability to spot anomalies that may indicate a typo, an import error, or an inconsistency in the source material.

Related resources from NHI Mgmt Group

• Custom Password Dictionary
• When should organisations prefer standards over custom implementations?
• When do custom IAM roles become a governance problem?
• How should security teams choose between basic, predefined, and custom GCP IAM roles?