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: 666 (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 108.79 924 100% 838 2
20th_books 122.84 894 100% 738 3
wiki_math 838.45 202 100% 152 3
wiki_geography 0.00 — — — 0
wiki_biology 191.59 696 100% 696 1
wiki_modern_life 355.31 410 100% 336 3
wiki_arts 176.42 732 100% 732 1
wiki_society 107.17 1313 100% 1313 1
wiki_linguistics 293.97 511 100% 441 2
wiki_physical_science 358.69 519 100% 382 3
wiki_history 80.92 1680 100% 1680 1
early_modern_science 291.22 442 100% 366 3
religious_translated 80.14 1293 100% 1293 1
cooking 189.31 794 100% 591 2
legal_scotus 98.97 1415 100% 1226 2
eu_parliament_debates 118.88 1185 100% 906 2
openstax_science 435.96 351 100% 286 3
openstax_society 99.21 1404 100% 1404 1
wpa_life_histories 41.90 2147 100% 2147 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.