Base Difficulty

Base difficulty: Level 318 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: 7048 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
cambridge_yle Movers (2 of 3) 750
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 13.56 1297 17% 6496 downrated 2
20th_books 13.21 1383 17% 6745 downrated 2
wiki_math 23.61 1315 17% 4833 downrated 2
wiki_geography 0.00 — — — 0
wiki_biology 8.36 2703 17% 9000 capped 1
wiki_modern_life 5.17 4405 17% 10000 capped 1
wiki_arts 5.67 3903 17% 10000 capped 1
wiki_society 8.18 2848 17% 11000 capped 1
wiki_linguistics 18.33 1189 17% 7134 downrated 1
wiki_physical_science 47.27 620 17% 2970 downrated 2
wiki_history 8.30 2745 17% 9000 capped 1
early_modern_science 13.09 2019 17% 8219 downrated 2
religious_translated 21.11 835 17% 5010 downrated 1
cooking 0.00 — — — 0
legal_scotus 3.68 5541 17% 19728 downrated 2
eu_parliament_debates 8.07 2532 17% 10236 downrated 2
openstax_science 25.68 1125 17% 5256 downrated 2
openstax_society 13.28 2522 17% 9506 downrated 2
wpa_life_histories 7.32 1979 17% 11874 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.