Plain-Language Rewrite Patterns & Readability Reference Bands (Flesch, F-K, SMOG, Fog)

An open reference table of common grammar and wordiness rewrite patterns (wordy-to-concise, passive-to-active, jargon-to-plain, litotes-to-positive) paired with readability reference ranges for the major readability formulas (Flesch Reading Ease, Flesch-Kincaid Grade, SMOG, Gunning Fog). Each rewrite row records an original phrase, its plain-language simplification, and approximate Flesch Reading Ease and grade-level deltas. The readability bands give the canonical score ranges, US grade mappings, and target bands for general web, technical, and US Plain Language Act audiences. An interactive version of this dataset powers the free readability and plain-language rewriter at LikeNative, which scores text and applies these simplification rules live. Columns: pattern_id, category, original_phrase, simplified_rewrite, reading_ease_delta, grade_level_delta, notes. License: CC0 / public domain.