Base Difficulty

Base difficulty: Level 17 edit

Level distribution for adjective (size): 14: 3 17: 4 101: 6 340: 1 380: 1 420: 1 1010: 1 1080: 1 1120: 6

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: 3358 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Movers (2 of 3) 750
cefr B1 (3 of 6) 4200

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 34.35 1340 50% 2680 downrated 1
20th_books 40.28 1197 50% 2394 downrated 1
wiki_math 0.00 — — — 0
wiki_geography 41.58 1702 50% 3404 downrated 1
wiki_biology 18.58 3464 50% 6928 downrated 1
wiki_modern_life 22.76 3169 50% 6338 downrated 1
wiki_arts 37.50 1845 50% 3690 downrated 1
wiki_society 15.65 4246 50% 8492 downrated 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 21.21 3093 50% 6186 downrated 1
wiki_history 30.94 2210 50% 4420 downrated 1
early_modern_science 25.63 2160 50% 4320 downrated 1
religious_translated 15.29 2909 50% 5818 downrated 1
cooking 0.00 — — — 0
legal_scotus 0.00 — — — 0
eu_parliament_debates 68.15 876 50% 1752 downrated 1
openstax_science 29.51 2230 50% 4460 downrated 1
openstax_society 28.94 2328 50% 4656 downrated 1
wpa_life_histories 19.38 2304 50% 4608 downrated 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.