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: 60 (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 Starters (1 of 3) 325
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 3519.85 39 100% 39 1
20th_books 3783.41 37 100% 37 1
wiki_math 2388.53 46 100% 46 1
wiki_geography 2121.81 34 100% 34 1
wiki_biology 1432.17 66 100% 66 1
wiki_modern_life 1581.26 54 100% 54 1
wiki_arts 1420.13 65 100% 65 1
wiki_society 1844.26 46 100% 46 1
wiki_linguistics 2447.84 41 100% 41 1
wiki_physical_science 1419.47 63 100% 63 1
wiki_history 1317.94 68 100% 68 1
early_modern_science 2628.83 49 100% 49 1
religious_translated 3227.25 43 100% 43 1
cooking 769.43 215 100% 215 1
legal_scotus 1508.53 67 100% 67 1
eu_parliament_debates 3041.28 35 100% 35 1
openstax_science 1683.36 59 100% 59 1
openstax_society 1508.70 69 100% 69 1
wpa_life_histories 4809.51 27 100% 27 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.