Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for adverb (focus): 1399: 3

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: 1490 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr A2 (2 of 6) 2100

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 8.57 7239 100% 7239 1
20th_books 7.15 7903 100% 7903 1
wiki_math 62.19 1743 100% 1743 1
wiki_geography 311.47 391 100% 391 1
wiki_biology 324.47 372 100% 372 1
wiki_modern_life 160.11 854 100% 854 1
wiki_arts 130.92 1030 100% 1030 1
wiki_society 127.49 1066 100% 1066 1
wiki_linguistics 298.44 431 100% 431 1
wiki_physical_science 176.40 820 100% 820 1
wiki_history 106.28 1252 100% 1252 1
early_modern_science 44.02 2496 100% 2496 1
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 0.00 — — — 0
eu_parliament_debates 97.26 1220 100% 1220 1
openstax_science 47.35 2674 100% 2674 1
openstax_society 26.43 4291 100% 4291 1
wpa_life_histories 13.96 4757 100% 4757 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.