Base Difficulty

Base difficulty: Level 455 edit

Level distribution for verb (physical_action): 5: 8 7: 3 8: 4 10: 5 11: 1 12: 1 19: 1 22: 1 23: 1 24: 2 25: 5 27: 3 28: 2 29: 4 109: 2 135: 1 140: 3 160: 3 165: 1 170: 1 172: 1 179: 2 185: 1 190: 2 194: 1 196: 1 204: 5 205: 3 215: 1 235: 1 254: 1 278: 4 279: 4 299: 1 300: 1 309: 2 311: 1 314: 2 319: 41 330: 3 340: 1 370: 1 400: 1 405: 4 406: 3 410: 2 415: 8 455: 1 475: 9 485: 1 1020: 1 1040: 3 1070: 3 1078: 10 1090: 12 1110: 1 1120: 2 1201: 1 1205: 1 1210: 1 1221: 1 1399: 72

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: 1986 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 44.04 1800 50% 1922 downrated 3
20th_books 32.39 1932 50% 2411 downrated 3
wiki_math 49.66 2651 50% 1612 4
wiki_geography 18.65 3651 50% 7302 downrated 1
wiki_biology 19.66 3332 50% 6664 downrated 1
wiki_modern_life 69.24 2734 50% 2089 3
wiki_arts 98.95 2344 50% 1391 4
wiki_society 89.40 2115 50% 1534 4
wiki_linguistics 121.19 1377 50% 1021 4
wiki_physical_science 97.89 1932 50% 1383 4
wiki_history 41.33 2547 50% 3223 downrated 2
early_modern_science 152.63 610 50% 715 downrated 4
religious_translated 28.84 3711 50% 2783 3
cooking 0.00 — — — 0
legal_scotus 104.13 1755 50% 1144 4
eu_parliament_debates 75.11 1757 50% 1273 4
openstax_science 92.26 1753 50% 1373 4
openstax_society 95.28 1587 50% 1417 3
wpa_life_histories 0.00 — — — 0

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.