Base Difficulty

Base difficulty: Level 22 edit

Level distribution for adjective (sequence): 22: 7 225: 1 1120: 12 1399: 4

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: 426 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cambridge_yle Movers (2 of 3) 750

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 824.94 125 80% 156 downrated 1
20th_books 710.27 150 80% 187 downrated 1
wiki_math 145.05 749 80% 936 downrated 1
wiki_geography 307.77 291 80% 364 downrated 1
wiki_biology 187.62 544 80% 680 downrated 1
wiki_modern_life 187.73 520 80% 650 downrated 1
wiki_arts 244.47 360 80% 450 downrated 1
wiki_society 175.15 566 80% 707 downrated 1
wiki_linguistics 243.77 425 80% 531 downrated 1
wiki_physical_science 143.78 808 80% 1010 downrated 1
wiki_history 398.93 190 80% 238 downrated 1
early_modern_science 399.73 207 80% 259 downrated 1
religious_translated 265.73 325 80% 406 downrated 1
cooking 250.61 475 80% 594 downrated 1
legal_scotus 98.93 1062 80% 1328 downrated 1
eu_parliament_debates 547.95 183 80% 229 downrated 1
openstax_science 136.98 836 80% 1045 downrated 1
openstax_society 210.32 500 80% 625 downrated 1
wpa_life_histories 486.87 196 80% 245 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.