Base Difficulty

Base difficulty: Level 350 edit

Level distribution for adjective (location): 350: 31 1010: 6 1020: 8 1040: 1 1050: 1 1070: 2 1120: 22 1399: 2

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: 903 (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 10.72 4636 67% 6954 downrated 1
20th_books 20.05 2776 67% 4164 downrated 1
wiki_math 165.84 542 67% 813 downrated 1
wiki_geography 573.33 113 67% 170 downrated 1
wiki_biology 144.21 605 67% 908 downrated 1
wiki_modern_life 209.07 355 67% 532 downrated 1
wiki_arts 118.48 725 67% 1088 downrated 1
wiki_society 243.13 300 67% 450 downrated 1
wiki_linguistics 218.53 389 67% 584 downrated 1
wiki_physical_science 160.58 580 67% 870 downrated 1
wiki_history 225.75 325 67% 488 downrated 1
early_modern_science 37.19 2034 67% 3051 downrated 1
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 190.46 433 67% 650 downrated 1
eu_parliament_debates 154.60 530 67% 795 downrated 1
openstax_science 70.61 1308 67% 1962 downrated 1
openstax_society 289.93 263 67% 394 downrated 1
wpa_life_histories 62.99 1050 67% 1575 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.