Base Difficulty

Base difficulty: Level 17 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: 697 (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 136.74 696 100% 696 1
20th_books 94.44 1043 100% 1043 1
wiki_math 158.22 862 100% 862 1
wiki_geography 36.81 3700 100% 3700 1
wiki_biology 92.01 1527 100% 1527 1
wiki_modern_life 154.79 894 100% 894 1
wiki_arts 78.96 1751 100% 1751 1
wiki_society 195.95 645 100% 645 1
wiki_linguistics 113.93 1150 100% 1150 1
wiki_physical_science 140.57 1045 100% 1045 1
wiki_history 96.07 1380 100% 1380 1
early_modern_science 400.57 268 100% 268 1
religious_translated 113.82 920 100% 920 1
cooking 384.25 402 100% 402 1
legal_scotus 468.32 244 100% 244 1
eu_parliament_debates 581.56 217 100% 217 1
openstax_science 241.05 578 100% 578 1
openstax_society 192.22 733 100% 733 1
wpa_life_histories 120.33 850 100% 850 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.