Base Difficulty

Base difficulty: Level 29 edit

Level distribution for adverb (duration): 26: 3 29: 3

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: 438 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600

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 489.00 108 33% 226 downrated 3
20th_books 458.61 115 33% 245 downrated 3
wiki_vital 266.47 161 33% 377 downrated 3
wiki_math 124.42 519 33% 961 downrated 3
wiki_geography 274.53 176 33% 407 downrated 3
wiki_biology 567.77 70 33% 177 downrated 3
wiki_modern_life 379.89 115 33% 266 downrated 3
early_modern_science 405.73 109 33% 257 downrated 3
religious_translated 282.37 177 33% 399 downrated 2
cooking 268.15 263 33% 506 downrated 2
legal_scotus 161.49 326 33% 666 downrated 2

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.