Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for verb (mental_state): 5: 1 8: 5 9: 1 10: 1 19: 6 20: 1 110: 1 120: 2 150: 21 160: 1 162: 1 185: 1 220: 1 230: 1 265: 2 300: 1 310: 2 311: 2 410: 1 455: 1 460: 1 475: 1 485: 1 1120: 1 1399: 32

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: 585 (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 119.10 741 67% 763 downrated 3
20th_books 87.91 986 67% 1038 downrated 3
wiki_math 215.44 830 80% 545 4
wiki_geography 87.18 2213 67% 1562 3
wiki_biology 76.21 1879 67% 1745 2
wiki_modern_life 172.10 1242 67% 839 4
wiki_arts 330.96 502 67% 389 4
wiki_society 498.84 236 67% 229 3
wiki_linguistics 168.14 855 67% 749 3
wiki_physical_science 130.53 1527 67% 1121 2
wiki_history 301.64 559 67% 421 3
early_modern_science 341.20 334 67% 319 4
religious_translated 111.20 916 67% 876 3
cooking 0.00 — — — 0
legal_scotus 563.76 176 67% 192 downrated 4
eu_parliament_debates 484.49 218 67% 253 downrated 3
openstax_science 171.51 979 67% 764 4
openstax_society 402.87 423 67% 330 4
wpa_life_histories 37.06 1855 67% 2246 downrated 2

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.