Base Difficulty

Base difficulty: Level 19 edit

Level distribution for adverb (style): -1: 1 11: 10 19: 4 27: 3 28: 38

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-36 for level
Frequency and Tier Signals
Combined Frequency Rank: 292 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Flyers (3 of 3) 1200

Rank used = synthetic rank this tier contributes to the combined frequency rank (lower = more common).

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 1021.19 126 100% 126 1
20th_books 1438.86 84 100% 84 1
wiki_vital 272.75 406 100% 406 1
wiki_math 351.77 402 100% 402 1
wiki_geography 257.77 451 100% 451 1
wiki_biology 241.80 513 100% 513 1
wiki_modern_life 253.95 465 100% 465 1
early_modern_science 466.85 221 100% 221 1
religious_translated 242.20 436 100% 436 1
cooking 852.03 183 100% 183 1
legal_scotus 453.44 256 100% 256 1

Best form = the single best-ranked form in the corpus, share-blind — how the spelling itself ranked. Share = how much of that spelling belongs to this lemma, when several senses compete for it. Zipf rank = all the forms combined (variant spellings included), each scaled by its share, and what feeds the combined frequency rank. Combining forms improves on the best form, but a share below 100% pushes the other way and usually wins: a sense holding a small slice of a common spelling is a rare word, so its rank lands downrated below the best form — and once it falls past what the corpus can support it is capped at the rank an unlisted word would get.