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: 2167 (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 9.38 3754 44% 8447 downrated 1
20th_books 8.23 4067 44% 9151 downrated 1
wiki_math 416.13 136 44% 306 downrated 1
wiki_geography 15.05 3977 44% 8948 downrated 1
wiki_biology 23.88 2530 44% 5693 downrated 1
wiki_modern_life 49.78 1319 44% 2968 downrated 1
wiki_arts 29.09 2124 44% 4779 downrated 1
wiki_society 104.80 510 44% 1148 downrated 1
wiki_linguistics 28.71 1968 44% 4428 downrated 1
wiki_physical_science 108.61 571 44% 1285 downrated 1
wiki_history 31.27 1956 44% 4401 downrated 1
early_modern_science 57.35 881 44% 1982 downrated 1
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 14.21 3302 44% 7430 downrated 1
eu_parliament_debates 146.48 377 44% 848 downrated 1
openstax_science 193.45 263 44% 592 downrated 1
openstax_society 127.94 448 44% 1008 downrated 1
wpa_life_histories 2.54 8911 44% 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.