Base Difficulty

Base difficulty: Level 29 edit

Level distribution for adverb (duration): 26: 3 29: 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, 1-36 for level
Frequency and Tier Signals
Combined Frequency Rank: 5713 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals

No lemma-tier assignment found yet.

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 12.29 5415 100% 5415 1
20th_books 17.73 3982 100% 3982 1
wiki_vital 28.90 4307 100% 4307 1
wiki_math 0.00 0
wiki_geography 45.20 2688 100% 2688 1
wiki_biology 0.00 0
wiki_modern_life 0.00 0
early_modern_science 29.54 3208 100% 3208 1
religious_translated 13.59 5129 100% 5129 1
cooking 0.00 0
legal_scotus 12.49 5727 100% 5727 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.