Base Difficulty

Base difficulty: Level 17 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: 1706 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
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 53.80 1694 100% 1694 1
20th_books 37.23 2273 100% 2273 1
wiki_math 161.68 840 100% 840 1
wiki_geography 0.00 — — — 0
wiki_biology 50.87 2660 100% 2660 1
wiki_modern_life 0.00 — — — 0
wiki_arts 51.21 2701 100% 2701 1
wiki_society 128.39 1061 100% 1061 1
wiki_linguistics 25.26 3879 100% 3879 1
wiki_physical_science 0.00 — — — 0
wiki_history 46.15 2945 100% 2945 1
early_modern_science 36.07 2927 100% 2927 1
religious_translated 144.59 758 100% 758 1
cooking 0.00 — — — 0
legal_scotus 119.00 1096 100% 1096 1
eu_parliament_debates 19.12 3856 100% 3856 1
openstax_science 64.42 2063 100% 2063 1
openstax_society 61.18 2230 100% 2230 1
wpa_life_histories 14.79 4914 100% 4914 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.