Base Difficulty

Base difficulty: Level 17 edit

Level distribution for adjective (quality): 3: 1 11: 10 14: 12 17: 23 18: 3 20: 4 318: 35 320: 28 330: 1 340: 2 360: 2 380: 1 400: 3 420: 4 430: 27 469: 27 470: 2 1040: 2 1060: 2 1070: 13 1090: 3 1110: 2 1120: 47 1214: 1 1399: 16

Per-Language Difficulty Overrides

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

Add Difficulty Override
-1 to exclude, 1-1399 for level
Frequency and Tier Signals
Combined Frequency Rank: 4144 (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 6.46 1974 14% 13818 downrated 1
20th_books 6.61 1903 14% 13321 downrated 1
wiki_math 8.41 1808 14% 8000 capped 1
wiki_geography 7.16 2746 14% 9000 capped 1
wiki_biology 29.69 635 14% 4445 downrated 1
wiki_modern_life 78.52 172 14% 1204 downrated 1
wiki_arts 35.77 470 14% 3290 downrated 1
wiki_society 30.87 576 14% 4032 downrated 1
wiki_linguistics 15.89 1175 14% 8225 downrated 1
wiki_physical_science 109.80 124 14% 868 downrated 1
wiki_history 21.54 865 14% 6055 downrated 1
early_modern_science 14.16 1175 14% 8225 downrated 1
religious_translated 12.36 1181 14% 8267 downrated 1
cooking 17.55 968 14% 5200 capped 1
legal_scotus 22.93 823 14% 5761 downrated 1
eu_parliament_debates 10.21 1571 14% 10997 downrated 1
openstax_science 61.92 265 14% 1855 downrated 1
openstax_society 23.56 866 14% 6062 downrated 1
wpa_life_histories 10.76 1289 14% 9023 downrated 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.