Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for verb (communication): 10: 2 11: 1 29: 1 119: 2 140: 1 185: 1 196: 1 215: 1 230: 1 295: 2 300: 1 310: 3 329: 1 400: 1 415: 4 455: 2 460: 2 475: 4 480: 52 485: 5 1000: 2 1060: 1 1070: 2 1120: 2 1399: 73

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: 1191 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cefr B2 (4 of 6) 6900

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 98.96 354 20% 962 downrated 4
20th_books 60.27 585 20% 1516 downrated 4
wiki_math 70.14 1197 50% 1772 downrated 2
wiki_geography 69.08 515 20% 1850 downrated 2
wiki_biology 119.58 231 20% 947 downrated 2
wiki_modern_life 72.90 609 20% 1843 downrated 2
wiki_arts 169.03 526 20% 753 downrated 4
wiki_society 127.65 420 20% 986 downrated 3
wiki_linguistics 153.76 234 20% 802 downrated 3
wiki_physical_science 110.74 305 20% 1187 downrated 2
wiki_history 117.95 764 20% 1101 downrated 2
early_modern_science 187.19 167 20% 555 downrated 4
religious_translated 104.10 310 20% 1016 downrated 3
cooking 19.38 1175 20% 5200 capped 1
legal_scotus 279.02 267 20% 426 downrated 4
eu_parliament_debates 206.23 260 20% 558 downrated 4
openstax_science 132.45 305 20% 925 downrated 4
openstax_society 82.79 894 20% 1661 downrated 3
wpa_life_histories 66.42 457 20% 1472 downrated 3

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.