Base difficulty: Level 420 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 |
0.00 | — | — | — | 0 |
20th_books |
6.10 | 8763 | 100% | 8763 | 1 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
196.88 | 641 | 100% | 641 | 1 |
wiki_biology |
0.00 | — | — | — | 0 |
wiki_modern_life |
32.85 | 4210 | 100% | 4210 | 1 |
wiki_arts |
54.51 | 2545 | 100% | 2545 | 1 |
wiki_society |
45.45 | 3063 | 100% | 3063 | 1 |
wiki_linguistics |
36.54 | 3004 | 100% | 3004 | 1 |
wiki_physical_science |
0.00 | — | — | — | 0 |
wiki_history |
39.99 | 3351 | 100% | 3351 | 1 |
early_modern_science |
0.00 | — | — | — | 0 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
24.29 | 3992 | 100% | 3992 | 1 |
eu_parliament_debates |
47.49 | 2142 | 100% | 2142 | 1 |
openstax_science |
0.00 | — | — | — | 0 |
openstax_society |
23.15 | 4726 | 100% | 4726 | 1 |
wpa_life_histories |
11.88 | 5784 | 100% | 5784 | 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.