Base Difficulty

Base difficulty: Level 28 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: 821 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cambridge_yle Starters (1 of 3) 325
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 212.56 1376 100% 416 5
20th_books 238.73 1141 100% 381 5
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 599.66 632 100% 222 3
wiki_modern_life 186.78 1557 100% 778 3
wiki_arts 25.77 4957 100% 4957 1
wiki_society 0.00 — — — 0
wiki_linguistics 0.00 — — — 0
wiki_physical_science 34.64 3608 100% 3608 1
wiki_history 0.00 — — — 0
early_modern_science 222.50 1200 100% 517 3
religious_translated 193.37 1218 100% 501 4
cooking 0.00 — — — 0
legal_scotus 0.00 — — — 0
eu_parliament_debates 30.70 4132 100% 2198 2
openstax_science 111.38 2807 100% 1087 3
openstax_society 0.00 — — — 0
wpa_life_histories 110.69 2343 100% 754 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.