Base Difficulty

Base difficulty: Level 10 edit

Level distribution for determiner (determiner_other): 6: 1 8: 1 9: 1 10: 10 11: 3 14: 2 18: 1

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: 61 (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 3859.80 30 80% 38 downrated 1
20th_books 3770.46 28 80% 35 downrated 1
wiki_math 2524.11 32 80% 40 downrated 1
wiki_geography 1048.35 68 80% 85 downrated 1
wiki_biology 1491.14 52 80% 65 downrated 1
wiki_modern_life 1237.13 56 80% 70 downrated 1
wiki_arts 1245.63 58 80% 72 downrated 1
wiki_society 1649.94 42 80% 52 downrated 1
wiki_linguistics 1626.45 56 80% 70 downrated 1
wiki_physical_science 1379.55 51 80% 64 downrated 1
wiki_history 1249.87 52 80% 65 downrated 1
early_modern_science 3012.58 35 80% 44 downrated 1
religious_translated 5611.06 18 80% 22 downrated 1
cooking 2042.72 56 80% 70 downrated 1
legal_scotus 1408.93 59 80% 74 downrated 1
eu_parliament_debates 2883.13 29 80% 36 downrated 1
openstax_science 1521.43 51 80% 64 downrated 1
openstax_society 1775.16 45 80% 56 downrated 1
wpa_life_histories 3826.69 26 80% 32 downrated 1

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.