Base Difficulty

Base difficulty: Level 469 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: 2478 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B1 (3 of 6) 4200

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 80.57 1162 100% 1162 1
20th_books 77.19 1237 100% 1237 1
wiki_math 18.48 3754 100% 3754 1
wiki_geography 0.00 — — — 0
wiki_biology 0.00 — — — 0
wiki_modern_life 0.00 — — — 0
wiki_arts 35.02 3801 100% 3801 1
wiki_society 49.34 2828 100% 2828 1
wiki_linguistics 22.57 4163 100% 4163 1
wiki_physical_science 0.00 — — — 0
wiki_history 52.67 2586 100% 2586 1
early_modern_science 61.13 1859 100% 1859 1
religious_translated 16.07 4705 100% 4705 1
cooking 0.00 — — — 0
legal_scotus 89.25 1465 100% 1465 1
eu_parliament_debates 288.66 427 100% 427 1
openstax_science 32.83 3568 100% 3568 1
openstax_society 90.53 1520 100% 1520 1
wpa_life_histories 14.12 5089 100% 5089 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.