Base Difficulty

Base difficulty: Level 23 edit

Level distribution for verb (directional_movement): 5: 6 23: 4 26: 3 28: 2 120: 1 135: 2 145: 5 210: 1 254: 1 300: 1 330: 2 415: 1 460: 1 470: 9 1040: 1 1050: 2 1120: 1 1399: 18

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: 656 (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 328.16 491 100% 292 4
20th_books 242.50 659 100% 387 4
wiki_math 0.00 — — — 0
wiki_geography 216.71 1513 100% 638 4
wiki_biology 177.99 1713 100% 733 4
wiki_modern_life 185.98 2108 100% 793 3
wiki_arts 186.56 2331 100% 731 4
wiki_society 172.68 1913 100% 803 3
wiki_linguistics 117.99 2022 100% 955 3
wiki_physical_science 121.18 2629 100% 1073 3
wiki_history 243.80 787 100% 539 3
early_modern_science 243.64 1131 100% 463 4
religious_translated 462.75 541 100% 228 4
cooking 0.00 — — — 0
legal_scotus 264.64 1043 100% 466 4
eu_parliament_debates 146.21 1661 100% 649 4
openstax_science 410.77 808 100% 336 4
openstax_society 204.85 1503 100% 664 3
wpa_life_histories 184.39 1067 100% 491 4

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.