Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for verb (directional_movement): 5: 6 23: 4 26: 3 28: 2 120: 1 135: 2 145: 5 210: 1 254: 1 300: 1 330: 2 415: 1 460: 1 470: 9 1040: 1 1050: 2 1120: 1 1399: 18

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: 1281 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B2 (4 of 6) 6900

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 62.08 1847 8% 1227 6
20th_books 30.25 2313 8% 2514 downrated 4
wiki_math 70.45 832 8% 1525 downrated 3
wiki_geography 91.10 893 8% 1472 downrated 4
wiki_biology 16.80 1163 8% 7790 downrated 2
wiki_modern_life 109.48 647 8% 1280 downrated 4
wiki_arts 202.44 367 25% 614 downrated 5
wiki_society 224.55 630 8% 616 5
wiki_linguistics 48.80 600 8% 2210 downrated 3
wiki_physical_science 26.23 721 8% 5279 downrated 2
wiki_history 144.31 654 25% 910 downrated 4
early_modern_science 58.31 817 8% 1830 downrated 3
religious_translated 93.32 1289 25% 1012 4
cooking 39.71 781 25% 3124 downrated 1
legal_scotus 138.58 471 8% 781 downrated 7
eu_parliament_debates 484.41 550 100% 242 6
openstax_science 21.64 806 8% 6088 downrated 2
openstax_society 126.92 849 8% 971 downrated 5
wpa_life_histories 76.78 1799 100% 974 6

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.