Base Difficulty

Base difficulty: Level 5 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: 582 (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 332.31 362 100% 308 2
20th_books 391.09 327 100% 268 3
wiki_math 92.71 1440 100% 1192 2
wiki_geography 0.00 — — — 0
wiki_biology 0.00 — — — 0
wiki_modern_life 120.57 1648 100% 1220 2
wiki_arts 298.82 633 100% 435 3
wiki_society 120.89 1627 100% 1169 2
wiki_linguistics 458.34 363 50% 284 2
wiki_physical_science 0.00 — — — 0
wiki_history 218.29 759 100% 597 2
early_modern_science 150.47 944 100% 765 2
religious_translated 179.84 669 100% 585 2
cooking 52.95 1721 100% 1721 1
legal_scotus 509.86 390 50% 242 3
eu_parliament_debates 184.49 569 50% 643 downrated 2
openstax_science 111.73 1577 100% 1214 2
openstax_society 197.21 954 100% 715 2
wpa_life_histories 313.88 431 100% 335 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.