Base Difficulty

Base difficulty: Level 150 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: 333 (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 1251.33 138 100% 92 4
20th_books 1401.14 128 100% 86 4
wiki_math 104.80 2366 100% 865 3
wiki_geography 0.00 — — — 0
wiki_biology 184.08 1497 100% 762 2
wiki_modern_life 60.92 4436 100% 2235 2
wiki_arts 231.40 1208 100% 592 3
wiki_society 164.59 1579 100% 857 2
wiki_linguistics 145.22 1679 100% 882 2
wiki_physical_science 92.45 2865 100% 1448 2
wiki_history 234.76 1197 100% 575 3
early_modern_science 1133.58 197 100% 93 4
religious_translated 429.87 624 100% 247 3
cooking 137.44 1260 100% 733 2
legal_scotus 256.75 761 100% 486 3
eu_parliament_debates 312.80 610 100% 370 3
openstax_science 193.96 1484 100% 686 3
openstax_society 337.84 969 100% 414 3
wpa_life_histories 568.27 422 100% 189 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.