Base Difficulty

Base difficulty: Level 20 edit

Level distribution for adverb (style): 6: 1 19: 4 20: 4 105: 46 1080: 1 1202: 1 1399: 2

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: 98 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cambridge_yle Movers (2 of 3) 750
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 2167.45 74 100% 57 3
20th_books 1937.56 81 100% 63 3
wiki_math 684.66 239 100% 194 3
wiki_geography 1138.33 94 100% 87 3
wiki_biology 1134.39 95 100% 87 3
wiki_modern_life 1116.84 95 100% 82 3
wiki_arts 1116.40 96 100% 84 3
wiki_society 1081.36 97 100% 86 3
wiki_linguistics 1065.09 118 100% 107 3
wiki_physical_science 807.43 142 100% 128 3
wiki_history 1005.49 108 100% 94 3
early_modern_science 1251.04 115 100% 86 3
religious_translated 1062.70 174 100% 114 3
cooking 3973.90 39 100% 35 3
legal_scotus 746.48 173 100% 143 3
eu_parliament_debates 1312.00 117 100% 86 3
openstax_science 818.42 161 100% 133 3
openstax_society 1390.37 99 100% 76 3
wpa_life_histories 1954.64 100 100% 70 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.