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: 1764 (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 75.41 1225 100% 1225 1
20th_books 74.03 1288 100% 1288 1
wiki_math 209.60 655 100% 655 1
wiki_geography 52.26 2636 100% 2636 1
wiki_biology 112.45 1248 100% 1248 1
wiki_modern_life 55.37 2654 100% 2654 1
wiki_arts 82.15 1684 100% 1684 1
wiki_society 48.71 2875 100% 2875 1
wiki_linguistics 79.55 1611 100% 1611 1
wiki_physical_science 108.94 1349 100% 1349 1
wiki_history 115.82 1132 100% 1132 1
early_modern_science 141.18 802 100% 802 1
religious_translated 64.78 1576 100% 1576 1
cooking 0.00 — — — 0
legal_scotus 18.41 4828 100% 4828 1
eu_parliament_debates 12.10 5062 100% 5062 1
openstax_science 101.34 1357 100% 1357 1
openstax_society 34.69 3490 100% 3490 1
wpa_life_histories 27.00 2883 100% 2883 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.