Base Difficulty

Base difficulty: Level 25 edit

Level distribution for verb (development): 25: 14 27: 1 29: 1

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: 2195 (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 0.00 0
20th_books 0.00 0
wiki_vital 146.21 1090 100% 871 2
wiki_math 16.97 3934 100% 3934 1
wiki_geography 43.33 2781 100% 2781 1
wiki_biology 377.36 301 100% 301 1
wiki_modern_life 98.84 1467 100% 1467 1
early_modern_science 69.43 1598 100% 1598 1
religious_translated 0.00 0
cooking 0.00 0
legal_scotus 17.49 6312 100% 4069 2

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.