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: 534 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
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 287.59 359 100% 359 1
20th_books 253.25 407 100% 407 1
wiki_math 679.07 194 100% 194 1
wiki_geography 55.88 2484 100% 2484 1
wiki_biology 342.04 344 100% 344 1
wiki_modern_life 112.50 1310 100% 1310 1
wiki_arts 155.27 849 100% 849 1
wiki_society 310.55 358 100% 358 1
wiki_linguistics 151.02 873 100% 873 1
wiki_physical_science 181.98 798 100% 798 1
wiki_history 145.19 903 100% 903 1
early_modern_science 394.11 272 100% 272 1
religious_translated 676.70 184 100% 184 1
cooking 49.58 1779 100% 1779 1
legal_scotus 257.03 494 100% 494 1
eu_parliament_debates 233.73 527 100% 527 1
openstax_science 203.64 692 100% 692 1
openstax_society 267.45 492 100% 492 1
wpa_life_histories 150.58 705 100% 705 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.