Base Difficulty

Base difficulty: Level 105 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: 1137 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Flyers (3 of 3) 1200
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 279.38 369 100% 369 1
20th_books 304.54 349 100% 349 1
wiki_math 27.64 2961 100% 2961 1
wiki_geography 0.00 — — — 0
wiki_biology 0.00 — — — 0
wiki_modern_life 32.49 4242 100% 4242 1
wiki_arts 47.46 2890 100% 2890 1
wiki_society 63.83 2182 100% 2182 1
wiki_linguistics 41.11 2779 100% 2779 1
wiki_physical_science 0.00 — — — 0
wiki_history 45.39 3004 100% 3004 1
early_modern_science 166.60 658 100% 658 1
religious_translated 124.53 847 100% 847 1
cooking 60.83 1577 100% 1577 1
legal_scotus 56.45 2115 100% 2115 1
eu_parliament_debates 92.69 1274 100% 1274 1
openstax_science 31.57 3677 100% 3677 1
openstax_society 85.08 1620 100% 1620 1
wpa_life_histories 288.25 387 100% 387 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.