Base Difficulty

Base difficulty: Level 9 edit

Level distribution for adverb (location): -1: 2 9: 12 19: 4 27: 3 29: 17

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: 660 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Flyers (3 of 3) 1200

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 679.52 189 100% 183 2
20th_books 443.37 269 100% 260 2
wiki_vital 124.86 1055 100% 1055 1
wiki_math 31.67 2722 100% 2722 1
wiki_geography 117.92 1104 100% 1104 1
wiki_biology 77.62 1776 100% 1776 1
wiki_modern_life 115.32 1261 100% 1261 1
early_modern_science 360.78 315 100% 302 2
religious_translated 190.91 581 100% 559 2
cooking 304.78 490 100% 490 1
legal_scotus 35.91 3106 100% 2831 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.