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: 1392 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
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 23.20 3500 100% 3500 1
20th_books 18.30 4101 100% 4101 1
wiki_math 36.85 2496 100% 2496 1
wiki_geography 103.23 1343 100% 1343 1
wiki_biology 109.23 1282 100% 1282 1
wiki_modern_life 144.72 970 100% 970 1
wiki_arts 32.07 4100 100% 4100 1
wiki_society 140.15 960 100% 960 1
wiki_linguistics 35.77 3047 100% 3047 1
wiki_physical_science 108.69 1351 100% 1351 1
wiki_history 113.11 1162 100% 1162 1
early_modern_science 105.50 1112 100% 1112 1
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 242.79 521 100% 521 1
eu_parliament_debates 43.53 2275 100% 2275 1
openstax_science 191.89 740 100% 740 1
openstax_society 239.13 576 100% 576 1
wpa_life_histories 21.05 3481 100% 3481 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.