Base Difficulty

Base difficulty: Level 1399 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: 1696 (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 19.12 3526 40% 3777 downrated 3
20th_books 11.61 5827 40% 5151 3
wiki_math 106.99 1130 40% 1091 3
wiki_geography 38.93 2416 40% 3508 downrated 2
wiki_biology 52.97 2245 40% 2588 downrated 2
wiki_modern_life 154.38 1001 50% 916 4
wiki_arts 285.47 267 40% 409 downrated 3
wiki_society 115.16 1161 40% 1215 downrated 3
wiki_linguistics 36.04 2471 40% 3145 downrated 2
wiki_physical_science 57.92 1740 40% 2441 downrated 2
wiki_history 127.47 687 40% 1035 downrated 3
early_modern_science 41.21 2063 40% 2676 downrated 2
religious_translated 95.76 1090 40% 1017 4
cooking 0.00 — — — 0
legal_scotus 86.07 1724 40% 1361 4
eu_parliament_debates 9.24 3936 50% 7872 downrated 1
openstax_science 130.58 1063 50% 1018 4
openstax_society 79.50 1642 50% 1664 downrated 3
wpa_life_histories 12.67 4715 50% 5262 downrated 2

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.