Base Difficulty

Base difficulty: Level 11 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: 1351 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cefr A2 (2 of 6) 2100

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 59.60 1534 100% 1534 1
20th_books 45.43 1924 100% 1924 1
wiki_math 376.49 375 100% 375 1
wiki_geography 90.22 1576 100% 1576 1
wiki_biology 75.41 1825 100% 1825 1
wiki_modern_life 143.41 978 100% 978 1
wiki_arts 96.47 1447 100% 1447 1
wiki_society 82.06 1721 100% 1721 1
wiki_linguistics 231.09 586 100% 586 1
wiki_physical_science 69.78 2066 100% 2066 1
wiki_history 76.36 1784 100% 1784 1
early_modern_science 105.93 1106 100% 1106 1
religious_translated 15.10 4923 100% 4923 1
cooking 0.00 — — — 0
legal_scotus 36.02 3062 100% 3062 1
eu_parliament_debates 46.32 2178 100% 2178 1
openstax_science 84.37 1639 100% 1639 1
openstax_society 73.58 1887 100% 1887 1
wpa_life_histories 127.28 812 100% 812 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.