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: 1466 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 133.02 841 80% 665 4
20th_books 97.26 1074 80% 913 3
wiki_math 0.00 — — — 0
wiki_geography 116.35 927 80% 1159 downrated 1
wiki_biology 34.93 3057 80% 3821 downrated 1
wiki_modern_life 21.30 4943 80% 6179 downrated 1
wiki_arts 105.72 2514 80% 1288 3
wiki_society 33.11 3331 80% 4164 downrated 1
wiki_linguistics 65.78 2080 80% 1744 2
wiki_physical_science 0.00 — — — 0
wiki_history 178.34 699 80% 723 downrated 2
early_modern_science 128.18 1075 80% 893 2
religious_translated 72.32 1990 80% 1232 3
cooking 0.00 — — — 0
legal_scotus 34.97 4597 80% 2069 4
eu_parliament_debates 42.58 3053 80% 1969 2
openstax_science 18.95 4480 80% 5600 downrated 1
openstax_society 86.97 1767 80% 1505 2
wpa_life_histories 122.61 867 80% 770 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.