Base Difficulty

Base difficulty: Level 14 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: 153 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cambridge_yle Starters (1 of 3) 325
cefr A1 (1 of 6) 800

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 506.81 226 100% 226 1
20th_books 574.80 213 100% 213 1
wiki_math 366.23 386 100% 386 1
wiki_geography 1039.25 90 100% 90 1
wiki_biology 523.23 199 100% 199 1
wiki_modern_life 859.14 112 100% 107 2
wiki_arts 1265.00 71 100% 70 2
wiki_society 913.87 94 100% 94 1
wiki_linguistics 763.45 163 100% 157 2
wiki_physical_science 637.65 165 100% 165 1
wiki_history 1163.14 78 100% 78 1
early_modern_science 689.18 148 100% 148 1
religious_translated 215.61 500 100% 500 1
cooking 337.96 450 100% 450 1
legal_scotus 652.50 158 100% 158 1
eu_parliament_debates 1551.38 73 100% 73 1
openstax_science 764.63 124 100% 124 1
openstax_society 1452.94 72 100% 72 1
wpa_life_histories 652.46 187 100% 179 2

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.