Base Difficulty

Base difficulty: Level 11 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: 720 (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 Flyers (3 of 3) 1200
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 48.66 1854 100% 1854 1
20th_books 72.78 1310 100% 1310 1
wiki_math 476.97 288 100% 288 1
wiki_geography 151.36 878 100% 878 1
wiki_biology 114.74 1214 100% 1214 1
wiki_modern_life 274.59 419 100% 419 1
wiki_arts 205.82 616 100% 616 1
wiki_society 231.32 525 100% 525 1
wiki_linguistics 203.68 655 100% 655 1
wiki_physical_science 233.19 604 100% 604 1
wiki_history 143.37 921 100% 921 1
early_modern_science 121.88 948 100% 948 1
religious_translated 60.01 1688 100% 1688 1
cooking 49.58 1778 100% 1778 1
legal_scotus 374.01 323 100% 323 1
eu_parliament_debates 241.91 508 100% 508 1
openstax_science 132.99 1068 100% 1068 1
openstax_society 136.82 1035 100% 1035 1
wpa_life_histories 85.37 1169 100% 1169 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.