Base Difficulty

Base difficulty: Level 23 edit

Level distribution for adverb (location): 18: 4 23: 22 250: 13 1070: 1 1120: 5 1205: 1 1221: 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: 3292 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 24.21 790 20% 3950 downrated 1
20th_books 27.55 729 20% 3645 downrated 1
wiki_math 77.39 361 20% 1805 downrated 1
wiki_geography 52.62 470 20% 2350 downrated 1
wiki_biology 59.88 401 20% 2005 downrated 1
wiki_modern_life 51.18 460 20% 2300 downrated 1
wiki_arts 34.30 758 20% 3790 downrated 1
wiki_society 23.70 1164 20% 5820 downrated 1
wiki_linguistics 95.99 252 20% 1260 downrated 1
wiki_physical_science 94.65 256 20% 1280 downrated 1
wiki_history 11.88 2296 20% 9000 capped 1
early_modern_science 36.58 595 20% 2975 downrated 1
religious_translated 15.82 1307 20% 6535 downrated 1
cooking 18.48 1207 20% 5200 capped 1
legal_scotus 53.41 466 20% 2330 downrated 1
eu_parliament_debates 7.71 2468 20% 11000 capped 1
openstax_science 59.56 427 20% 2135 downrated 1
openstax_society 37.34 760 20% 3800 downrated 1
wpa_life_histories 16.20 1177 20% 5885 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.