Base Difficulty

Base difficulty: Level 429 edit

Level distribution for adjective (temporal_status): 360: 1 390: 3 429: 15 1000: 3 1010: 1 1020: 1 1030: 3 1050: 1 1070: 4 1120: 29 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: 312 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
cefr A2 (2 of 6) 2100

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 72.79 1265 100% 1265 1
20th_books 44.38 1964 100% 1964 1
wiki_math 568.20 231 100% 231 1
wiki_geography 540.02 194 100% 194 1
wiki_biology 560.69 182 100% 182 1
wiki_modern_life 820.12 106 100% 106 1
wiki_arts 949.16 92 100% 92 1
wiki_society 730.39 124 100% 124 1
wiki_linguistics 1114.07 97 100% 97 1
wiki_physical_science 391.57 328 100% 328 1
wiki_history 562.20 167 100% 167 1
early_modern_science 210.35 514 100% 514 1
religious_translated 25.36 3391 100% 3391 1
cooking 28.17 2513 100% 2513 1
legal_scotus 45.94 2510 100% 2510 1
eu_parliament_debates 71.71 1567 100% 1567 1
openstax_science 151.69 943 100% 943 1
openstax_society 312.50 406 100% 406 1
wpa_life_histories 83.36 1184 100% 1184 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.