Base Difficulty

Base difficulty: Level 28 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: 648 (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 164.19 600 100% 600 1
20th_books 157.90 636 100% 636 1
wiki_vital 275.77 395 100% 395 1
wiki_math 361.95 394 100% 394 1
wiki_geography 117.75 1105 100% 1105 1
wiki_biology 241.44 515 100% 515 1
wiki_modern_life 325.20 331 100% 331 1
early_modern_science 245.12 439 100% 439 1
religious_translated 65.37 1527 100% 1527 1
cooking 241.33 577 100% 577 1
legal_scotus 331.23 367 100% 367 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.