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: 395 (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 284.26 364 100% 364 1
20th_books 242.29 432 100% 432 1
wiki_math 479.09 285 100% 285 1
wiki_geography 101.76 1368 100% 1368 1
wiki_biology 313.01 384 100% 384 1
wiki_modern_life 348.44 306 100% 306 1
wiki_arts 250.71 471 100% 471 1
wiki_society 490.08 198 100% 198 1
wiki_linguistics 570.18 212 100% 212 1
wiki_physical_science 380.29 342 100% 342 1
wiki_history 166.47 784 100% 784 1
early_modern_science 585.20 176 100% 176 1
religious_translated 277.30 398 100% 398 1
cooking 110.40 1067 100% 1067 1
legal_scotus 438.84 264 100% 264 1
eu_parliament_debates 507.85 242 100% 242 1
openstax_science 402.88 302 100% 302 1
openstax_society 443.98 256 100% 256 1
wpa_life_histories 128.34 790 100% 790 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.