Base Difficulty

Base difficulty: Level 19 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: 580 (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 215.17 938 100% 438 3
20th_books 353.12 533 100% 289 3
wiki_math 52.98 2834 50% 1404 3
wiki_geography 19.62 3465 50% 6930 downrated 1
wiki_biology 54.97 3390 50% 2333 2
wiki_modern_life 96.73 2441 50% 1456 3
wiki_arts 185.09 1891 100% 738 4
wiki_society 234.23 613 50% 570 3
wiki_linguistics 536.01 405 50% 245 3
wiki_physical_science 0.00 — — — 0
wiki_history 219.25 1040 100% 607 3
early_modern_science 207.21 1139 100% 558 3
religious_translated 418.27 600 100% 253 4
cooking 40.56 2019 100% 2019 1
legal_scotus 47.95 4421 100% 1872 3
eu_parliament_debates 111.70 1768 100% 892 3
openstax_science 280.14 1200 50% 484 4
openstax_society 543.10 544 50% 254 4
wpa_life_histories 381.25 493 100% 271 4

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.