Base Difficulty

Base difficulty: Level 14 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: 274 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cambridge_yle Flyers (3 of 3) 1200
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 77.80 1511 100% 1067 3
20th_books 110.43 1096 100% 795 3
wiki_math 661.75 218 100% 191 2
wiki_geography 737.06 184 100% 149 2
wiki_biology 592.44 201 100% 181 2
wiki_modern_life 432.39 275 100% 249 2
wiki_arts 577.49 221 100% 183 2
wiki_society 572.99 221 100% 186 3
wiki_linguistics 329.98 501 100% 400 2
wiki_physical_science 647.85 191 100% 174 2
wiki_history 460.26 315 100% 247 2
early_modern_science 326.53 509 100% 336 3
religious_translated 33.68 2713 100% 2713 1
cooking 119.44 993 100% 993 1
legal_scotus 267.55 544 100% 449 3
eu_parliament_debates 1757.87 71 100% 63 3
openstax_science 888.55 111 100% 105 2
openstax_society 780.43 166 100% 144 3
wpa_life_histories 64.31 1835 100% 1375 2

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.