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: 835 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Movers (2 of 3) 750
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 169.19 471 67% 568 downrated 3
20th_books 158.09 496 67% 621 downrated 3
wiki_math 21.25 3036 80% 3795 downrated 1
wiki_geography 28.27 3227 67% 4840 downrated 1
wiki_biology 68.07 1371 67% 2056 downrated 1
wiki_modern_life 75.86 1287 67% 1931 downrated 1
wiki_arts 116.51 992 67% 1148 downrated 2
wiki_society 31.83 2935 67% 4403 downrated 1
wiki_linguistics 14.69 4253 67% 6380 downrated 1
wiki_physical_science 58.07 1683 67% 2524 downrated 1
wiki_history 29.51 3061 67% 4592 downrated 1
early_modern_science 194.96 475 67% 544 downrated 3
religious_translated 60.37 1455 67% 1588 downrated 2
cooking 1427.02 74 67% 107 downrated 2
legal_scotus 37.37 2123 67% 3185 downrated 1
eu_parliament_debates 33.93 2039 67% 3058 downrated 1
openstax_science 27.43 2981 67% 4472 downrated 1
openstax_society 32.79 2656 67% 3984 downrated 1
wpa_life_histories 277.82 323 67% 396 downrated 3

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.