Base difficulty: Level 1399 edit
Level distribution for adjective (importance): 340: 1 360: 1 390: 1 420: 5 1030: 1 1120: 4 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 |
12.22 | 4177 | 67% | 6266 downrated | 1 |
20th_books |
13.04 | 3883 | 67% | 5824 downrated | 1 |
wiki_math |
43.76 | 1672 | 67% | 2508 downrated | 1 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
92.88 | 1010 | 67% | 1515 downrated | 1 |
wiki_modern_life |
57.58 | 1711 | 67% | 2566 downrated | 1 |
wiki_arts |
44.29 | 2088 | 67% | 3132 downrated | 1 |
wiki_society |
70.46 | 1331 | 67% | 1997 downrated | 1 |
wiki_linguistics |
30.25 | 2588 | 67% | 3882 downrated | 1 |
wiki_physical_science |
82.12 | 1184 | 67% | 1776 downrated | 1 |
wiki_history |
31.97 | 2843 | 67% | 4264 downrated | 1 |
early_modern_science |
65.27 | 1186 | 67% | 1779 downrated | 1 |
religious_translated |
15.21 | 3675 | 67% | 5513 downrated | 1 |
cooking |
44.31 | 1488 | 67% | 2232 downrated | 1 |
legal_scotus |
94.01 | 926 | 67% | 1389 downrated | 1 |
eu_parliament_debates |
222.55 | 369 | 67% | 554 downrated | 1 |
openstax_science |
115.46 | 823 | 67% | 1234 downrated | 1 |
openstax_society |
49.84 | 1845 | 67% | 2768 downrated | 1 |
wpa_life_histories |
4.12 | 8418 | 67% | 12627 downrated | 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.