Convert informal English words, phrases, collocations, and sentence fragments into precise TOEFL-appropriate alternatives while preserving meaning and register. Use when a user asks what an expression means, whether it is too informal, how to say it more academically, how to replace low-level vocabulary in TOEFL writing, or how slang/plain English compares with academic alternatives.
Use this skill as a register-conversion lexicon, not a generic dictionary. Optimize for semantic precision, natural collocation, and exam-safe phrasing.
Route the request into one primary mode:
meaning: explain what a word or phrase means in contextconversion: convert slang or casual English into TOEFL-safe wordingupgrade: replace a weak word, phrase, or sentence span with a stronger alternativecomparison: distinguish between near-synonyms or levels of formalityreferences/output-contract.md.Every recommendation must satisfy all of the following:
meaning-safe: the replacement matches the intended sense in contextcollocation-safe: the phrase sounds natural with surrounding wordsregister-safe: the recommendation fits the requested setting, especially TOEFL writingnot fake-advanced: avoid words that look sophisticated but distort the original meaningreferences/json-contract.md.toefl-writing.content-parser.references/output-contract.md when formatting a response or when the input type is ambiguous.references/json-contract.md when the runtime asks for structured output or validation-safe JSON.references/evaluation-cases.md when running prompt regression checks after updates.