Base Difficulty

Base difficulty: Level 8 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: 40 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 3747.54 54 100% 36 2
20th_books 3780.26 53 100% 35 2
wiki_math 6422.77 18 100% 17 2
wiki_geography 1060.09 124 100% 98 2
wiki_biology 4133.93 28 100% 26 2
wiki_modern_life 4873.52 25 100% 20 2
wiki_arts 2096.00 62 100% 45 2
wiki_society 3011.52 39 100% 31 2
wiki_linguistics 3186.19 37 100% 33 2
wiki_physical_science 5226.86 23 100% 21 2
wiki_history 1356.07 96 100% 68 2
early_modern_science 3073.23 63 100% 37 2
religious_translated 1806.71 102 100% 70 2
cooking 1973.71 85 100% 78 2
legal_scotus 2535.74 74 100% 41 2
eu_parliament_debates 3592.35 38 100% 29 2
openstax_science 6330.96 17 100% 15 2
openstax_society 4298.94 30 100% 22 2
wpa_life_histories 3144.03 76 100% 45 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.