Base Difficulty

Base difficulty: Level 320 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: 2978 (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 8361 44% 18812 downrated 1
20th_books 6.26 4925 44% 11081 downrated 1
wiki_math 0.00 — — — 0
wiki_geography 139.30 382 44% 860 downrated 1
wiki_biology 106.80 527 44% 1186 downrated 1
wiki_modern_life 145.36 331 44% 745 downrated 1
wiki_arts 74.19 777 44% 1748 downrated 1
wiki_society 46.74 1337 44% 3008 downrated 1
wiki_linguistics 16.14 3010 44% 6772 downrated 1
wiki_physical_science 55.19 1173 44% 2639 downrated 1
wiki_history 46.48 1278 44% 2876 downrated 1
early_modern_science 8.43 4731 44% 10400 capped 1
religious_translated 0.00 — — — 0
cooking 13.02 2431 44% 5200 capped 1
legal_scotus 63.84 905 44% 2036 downrated 1
eu_parliament_debates 41.53 1265 44% 2846 downrated 1
openstax_science 14.40 3593 44% 8084 downrated 1
openstax_society 31.02 1965 44% 4421 downrated 1
wpa_life_histories 4.68 5787 44% 13021 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.