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: 7270 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B2 (4 of 6) 6900

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 5.88 2869 20% 14345 downrated 1
20th_books 5.64 2911 20% 14555 downrated 1
wiki_math 15.20 1496 20% 7480 downrated 1
wiki_geography 7.52 3611 20% 9000 capped 1
wiki_biology 9.67 2790 20% 9000 capped 1
wiki_modern_life 20.69 1422 20% 7110 downrated 1
wiki_arts 19.96 1382 20% 6910 downrated 1
wiki_society 26.31 1027 20% 5135 downrated 1
wiki_linguistics 17.83 1441 20% 7205 downrated 1
wiki_physical_science 17.49 1663 20% 8000 capped 1
wiki_history 12.88 2144 20% 9000 capped 1
early_modern_science 19.58 1185 20% 5925 downrated 1
religious_translated 4.68 3599 20% 10400 capped 1
cooking 6.31 2331 20% 5200 capped 1
legal_scotus 55.80 441 20% 2205 downrated 1
eu_parliament_debates 17.20 1343 20% 6715 downrated 1
openstax_science 19.85 1381 20% 6905 downrated 1
openstax_society 16.93 1625 20% 8125 downrated 1
wpa_life_histories 3.89 3678 20% 18390 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.