Base difficulty: Level 420 edit
Level distribution for adjective (indefinite_quantity): 420: 5 1020: 1 1120: 5 1399: 3
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
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 |
49.58 | 1818 | 100% | 1818 | 1 |
20th_books |
34.92 | 2406 | 100% | 2406 | 1 |
wiki_math |
108.56 | 1173 | 100% | 1173 | 1 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
59.89 | 2295 | 100% | 2295 | 1 |
wiki_modern_life |
78.36 | 1895 | 100% | 1895 | 1 |
wiki_arts |
0.00 | — | — | — | 0 |
wiki_society |
68.09 | 2047 | 100% | 2047 | 1 |
wiki_linguistics |
37.62 | 2955 | 100% | 2955 | 1 |
wiki_physical_science |
116.47 | 1268 | 100% | 1268 | 1 |
wiki_history |
35.14 | 3752 | 100% | 3752 | 1 |
early_modern_science |
216.42 | 497 | 100% | 497 | 1 |
religious_translated |
79.17 | 1309 | 100% | 1309 | 1 |
cooking |
500.31 | 308 | 100% | 308 | 1 |
legal_scotus |
278.08 | 443 | 100% | 443 | 1 |
eu_parliament_debates |
129.72 | 925 | 100% | 925 | 1 |
openstax_science |
94.34 | 1463 | 100% | 1463 | 1 |
openstax_society |
52.91 | 2519 | 100% | 2519 | 1 |
wpa_life_histories |
23.30 | 3441 | 100% | 3441 | 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.