Base Difficulty

Base difficulty: Level 1399 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: 7975 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B1 (3 of 6) 4200

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 3.05 4177 17% 20000 capped 1
20th_books 3.26 3883 17% 20000 capped 1
wiki_math 10.94 1672 17% 8000 capped 1
wiki_geography 0.00 — — — 0
wiki_biology 23.22 1010 17% 6060 downrated 1
wiki_modern_life 14.39 1711 17% 10000 capped 1
wiki_arts 11.07 2088 17% 10000 capped 1
wiki_society 17.61 1331 17% 7986 downrated 1
wiki_linguistics 7.56 2588 17% 9000 capped 1
wiki_physical_science 20.53 1184 17% 7104 downrated 1
wiki_history 7.99 2843 17% 9000 capped 1
early_modern_science 16.32 1186 17% 7116 downrated 1
religious_translated 3.80 3675 17% 10400 capped 1
cooking 11.08 1488 17% 5200 capped 1
legal_scotus 23.50 926 17% 5556 downrated 1
eu_parliament_debates 55.64 369 17% 2214 downrated 1
openstax_science 28.87 823 17% 4938 downrated 1
openstax_society 12.46 1845 17% 11000 capped 1
wpa_life_histories 1.03 8418 17% 20000 capped 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.