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: 229 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cambridge_yle Starters (1 of 3) 325
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 964.19 108 67% 125 downrated 3
20th_books 895.48 116 67% 140 downrated 2
wiki_math 219.43 589 67% 606 downrated 2
wiki_geography 460.15 225 67% 249 downrated 3
wiki_biology 1067.50 74 67% 91 downrated 3
wiki_modern_life 657.24 143 67% 150 downrated 3
wiki_arts 469.79 208 67% 231 downrated 3
wiki_society 284.73 396 67% 417 downrated 2
wiki_linguistics 644.55 167 67% 189 downrated 3
wiki_physical_science 493.32 275 67% 261 3
wiki_history 391.07 239 67% 277 downrated 3
early_modern_science 798.35 109 67% 135 downrated 3
religious_translated 566.11 179 67% 219 downrated 2
cooking 538.63 267 67% 278 downrated 2
legal_scotus 294.00 369 67% 420 downrated 2
eu_parliament_debates 417.53 309 67% 292 2
openstax_science 487.36 210 67% 235 downrated 2
openstax_society 472.06 233 67% 258 downrated 2
wpa_life_histories 737.21 133 67% 175 downrated 3

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.