Base Difficulty

Base difficulty: Level 23 edit

Level distribution for adverb (intensity): 23: 7 105: 6 1399: 4

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: 83 (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 1741.92 71 100% 71 1
20th_books 1705.85 74 100% 74 1
wiki_math 1874.38 58 100% 58 1
wiki_geography 1196.88 74 100% 74 1
wiki_biology 1767.59 53 100% 53 1
wiki_modern_life 1442.51 59 100% 59 1
wiki_arts 1290.43 66 100% 66 1
wiki_society 1394.64 58 100% 58 1
wiki_linguistics 1902.47 63 100% 63 1
wiki_physical_science 1587.63 56 100% 56 1
wiki_history 1396.87 62 100% 62 1
early_modern_science 1931.46 61 100% 61 1
religious_translated 1131.58 115 100% 115 1
cooking 664.83 243 100% 243 1
legal_scotus 2041.26 45 100% 45 1
eu_parliament_debates 1696.78 66 100% 66 1
openstax_science 1519.02 65 100% 65 1
openstax_society 1347.99 76 100% 76 1
wpa_life_histories 1235.78 114 100% 114 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.