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: 2694 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Flyers (3 of 3) 1200
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 28.75 2925 100% 2925 1
20th_books 41.86 2064 100% 2064 1
wiki_math 21.94 3474 100% 3474 1
wiki_geography 0.00 — — — 0
wiki_biology 99.94 1412 100% 1412 1
wiki_modern_life 32.20 4288 100% 4288 1
wiki_arts 54.84 2537 100% 2537 1
wiki_society 28.65 4552 100% 4552 1
wiki_linguistics 59.12 2120 100% 2120 1
wiki_physical_science 72.54 1982 100% 1982 1
wiki_history 37.89 3509 100% 3509 1
early_modern_science 59.61 1924 100% 1924 1
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 63.75 1941 100% 1941 1
eu_parliament_debates 0.00 — — — 0
openstax_science 34.49 3462 100% 3462 1
openstax_society 31.42 3774 100% 3774 1
wpa_life_histories 42.80 2112 100% 2112 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.