Base Difficulty

Base difficulty: Level 20 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: 813 (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 136.33 1718 100% 634 4
20th_books 120.09 2146 100% 664 5
wiki_math 306.34 810 100% 402 3
wiki_geography 58.29 2392 100% 2392 1
wiki_biology 0.00 — — — 0
wiki_modern_life 128.48 2240 100% 1149 2
wiki_arts 149.57 1790 100% 905 3
wiki_society 183.93 1648 100% 757 3
wiki_linguistics 91.83 2542 100% 1271 2
wiki_physical_science 58.22 2400 100% 2400 1
wiki_history 153.16 1502 100% 886 2
early_modern_science 45.16 3599 100% 2084 2
religious_translated 223.16 1230 100% 443 4
cooking 0.00 — — — 0
legal_scotus 256.35 1538 100% 461 5
eu_parliament_debates 89.30 2196 100% 1117 2
openstax_science 94.70 2405 100% 1330 2
openstax_society 363.03 813 100% 371 5
wpa_life_histories 45.53 3888 100% 1483 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.