Controlling LLM Prose

Area VI · Controlled Natural Languages & Constrained Registers

Basic English & Restricted Lexicons

Writing to a fixed word list

Constrain the vocabulary to a small approved list, forcing plain, universal phrasing.

Definition & mechanics

Basic English, Charles Ogden's 850-word subset, showed that most ideas can be expressed with a tiny core vocabulary and a handful of operator verbs. The general technique—writing to a restricted lexicon—caps which words you may use, forcing paraphrase of jargon and rare terms into common ones any reader shares.

A curiosity

Ogden replaced thousands of verbs with about eighteen “operators” like get, make, put, and take. “Descend” becomes “go down.” Constraint breeds a strange, durable clarity.

Example

BeforeThe apparatus facilitates the expedited dissemination of the requisite credentials.
After (restricted lexicon)The device helps send out the needed passes quickly.

Copy-ready prompt

Copyable Prompt
Apply the concept of Restricted Lexicon (rewrite using only common, high-frequency English words—approximately the most frequent 1,000–2,000 words of the language; replace jargon, Latinate abstractions, and rare terms with plain everyday equivalents, paraphrasing where no simple single word exists) to the provided text and rewrite in place.

Apply the edits directly to the file as a clean, production-ready deliverable. Output ONLY the revised document text without embedding revision notes, changelogs, or meta-commentary in the file itself—put any explanations in your chat response only.