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: 436 (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 214.41 472 100% 472 1
20th_books 194.35 545 100% 545 1
wiki_math 776.08 173 100% 173 1
wiki_geography 128.18 1060 100% 1060 1
wiki_biology 249.68 502 100% 502 1
wiki_modern_life 396.10 251 100% 251 1
wiki_arts 235.55 511 100% 511 1
wiki_society 299.23 381 100% 381 1
wiki_linguistics 350.94 364 100% 364 1
wiki_physical_science 454.58 273 100% 273 1
wiki_history 215.75 559 100% 559 1
early_modern_science 349.69 310 100% 310 1
religious_translated 77.04 1345 100% 1345 1
cooking 356.08 434 100% 434 1
legal_scotus 215.95 586 100% 586 1
eu_parliament_debates 879.78 125 100% 125 1
openstax_science 392.74 312 100% 312 1
openstax_society 356.73 344 100% 344 1
wpa_life_histories 94.56 1071 100% 1071 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.