Base Difficulty

Base difficulty: Level 29 edit

Level distribution for adverb (relative_time): 19: 1 26: 3 29: 12

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: 1124 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
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 235.26 234 50% 415 downrated 1
20th_books 233.33 248 50% 434 downrated 1
wiki_vital 95.12 634 50% 1303 downrated 1
wiki_math 91.05 738 50% 1328 downrated 1
wiki_geography 99.23 611 50% 1235 downrated 1
wiki_biology 60.09 1154 50% 2362 downrated 1
wiki_modern_life 108.90 566 50% 1196 downrated 1
early_modern_science 173.77 309 50% 587 downrated 1
religious_translated 103.58 513 50% 942 downrated 1
cooking 112.74 606 50% 1076 downrated 1
legal_scotus 57.88 1113 50% 1920 downrated 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.