Base Difficulty

Base difficulty: Level 19 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: 796 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 362.84 299 100% 299 1
20th_books 548.72 220 100% 220 1
wiki_math 20.73 3552 100% 3552 1
wiki_geography 0.00 — — — 0
wiki_biology 0.00 — — — 0
wiki_modern_life 0.00 — — — 0
wiki_arts 66.44 2090 100% 2090 1
wiki_society 45.19 3074 100% 3074 1
wiki_linguistics 30.96 3400 100% 3400 1
wiki_physical_science 0.00 — — — 0
wiki_history 57.91 2366 100% 2366 1
early_modern_science 237.19 457 100% 457 1
religious_translated 70.97 1458 100% 1458 1
cooking 105.90 1106 100% 1106 1
legal_scotus 32.37 3271 100% 3271 1
eu_parliament_debates 415.37 287 100% 287 1
openstax_science 53.16 2435 100% 2435 1
openstax_society 80.95 1702 100% 1702 1
wpa_life_histories 234.26 469 100% 469 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.