Base Difficulty

Base difficulty: Level 18 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: 1171 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
cambridge_yle Movers (2 of 3) 750
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 30.33 2804 100% 2804 1
20th_books 36.18 2328 100% 2328 1
wiki_math 51.97 1956 100% 1956 1
wiki_geography 269.68 624 100% 479 2
wiki_biology 40.05 3276 100% 3276 1
wiki_modern_life 100.26 2210 100% 1443 2
wiki_arts 363.74 482 100% 340 2
wiki_society 130.69 1523 100% 1080 2
wiki_linguistics 66.10 2598 100% 1634 2
wiki_physical_science 38.40 3336 100% 3336 1
wiki_history 257.55 703 100% 506 2
early_modern_science 93.02 1261 100% 1261 1
religious_translated 41.62 2259 100% 2259 1
cooking 0.00 — — — 0
legal_scotus 14.37 5561 100% 5561 1
eu_parliament_debates 17.32 4095 100% 4095 1
openstax_science 24.52 4378 100% 4378 1
openstax_society 102.10 2105 100% 1288 2
wpa_life_histories 68.12 1419 100% 1419 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.