Base Difficulty

Base difficulty: Level 11 edit

Level distribution for adjective (physical_property): 3: 1 8: 2 11: 11 14: 20 17: 9 18: 7 20: 2 27: 3 133: 1 179: 1 249: 1 330: 1 340: 1 355: 38 360: 1 370: 2 379: 1 380: 1 420: 1 1000: 1 1010: 3 1040: 8 1050: 5 1090: 2 1120: 16 1209: 1 1399: 9

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: 2223 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cefr B1 (3 of 6) 4200

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 58.36 354 20% 1770 downrated 1
20th_books 35.72 585 20% 2925 downrated 1
wiki_math 17.79 1362 20% 6810 downrated 1
wiki_geography 48.87 507 20% 2535 downrated 1
wiki_biology 94.46 228 20% 1140 downrated 1
wiki_modern_life 41.69 604 20% 3020 downrated 1
wiki_arts 46.98 513 20% 2565 downrated 1
wiki_society 54.75 414 20% 2070 downrated 1
wiki_linguistics 106.19 230 20% 1150 downrated 1
wiki_physical_science 85.44 301 20% 1505 downrated 1
wiki_history 34.47 748 20% 3740 downrated 1
early_modern_science 120.36 167 20% 835 downrated 1
religious_translated 71.74 310 20% 1550 downrated 1
cooking 19.38 1174 20% 5200 capped 1
legal_scotus 86.58 267 20% 1335 downrated 1
eu_parliament_debates 92.32 260 20% 1300 downrated 1
openstax_science 79.96 305 20% 1525 downrated 1
openstax_society 31.91 892 20% 4460 downrated 1
wpa_life_histories 46.56 468 20% 2340 downrated 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.