Base Difficulty

Base difficulty: Level 318 edit

Level distribution for adjective (quality): 3: 1 11: 10 14: 12 17: 23 18: 3 20: 4 318: 35 320: 28 330: 1 340: 2 360: 2 380: 1 400: 3 420: 4 430: 27 469: 27 470: 2 1040: 2 1060: 2 1070: 13 1090: 3 1110: 2 1120: 47 1214: 1 1399: 16

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: 3210 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Movers (2 of 3) 750
cefr A1 (1 of 6) 800

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 42.29 471 17% 2274 downrated 3
20th_books 39.52 496 17% 2484 downrated 3
wiki_math 5.30 3040 20% 8000 capped 1
wiki_geography 6.97 3258 17% 9000 capped 1
wiki_biology 16.89 1382 17% 8292 downrated 1
wiki_modern_life 18.88 1297 17% 7782 downrated 1
wiki_arts 28.97 999 17% 4621 downrated 2
wiki_society 7.91 2946 17% 11000 capped 1
wiki_linguistics 3.65 4264 17% 9000 capped 1
wiki_physical_science 14.45 1687 17% 8000 capped 1
wiki_history 7.23 3125 17% 9000 capped 1
early_modern_science 48.72 475 17% 2174 downrated 3
religious_translated 15.11 1447 17% 6327 downrated 2
cooking 356.67 74 17% 428 downrated 2
legal_scotus 9.34 2124 17% 12744 downrated 1
eu_parliament_debates 8.48 2040 17% 11000 capped 1
openstax_science 6.85 2979 17% 11000 capped 1
openstax_society 8.19 2656 17% 11000 capped 1
wpa_life_histories 71.06 320 17% 1551 downrated 3

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.