Frederick Douglass · 1818
Heavy going at CET-4 level. Not unreadable — just not readable the look-every-word-up way.
Coverage = the share of words in the text you already know. The research gives two lines: 98% before independent fluent reading is realistic, 95% for the instructional level that needs support (Hu & Nation, 2000). Proper nouns are not counted as unknown — recognising that it is a name is enough; this book has 282 of them.
Advanced — read it with glosses. 40,917 words in total; at 150 words a minute for a non-native reader, about 4 h 33 min to finish. Average sentence length 18.9 words. Reaching 95% coverage on this book (the floor for readability) takes roughly 17,500 word families.
The opening of Narrative of the Life of Frederick Douglass, an American Slave, word for word. Tap any word you don't know and its meaning here appears beside it — no sign-up, tap as often as you like.
In the month of August, 1841, I attended an anti-slavery convention in Nantucket, at which it was my happiness to become acquainted with _Frederick Douglass_, the writer of the following Narrative. He was a stranger to nearly every member of that body; but, having recently made his escape from the southern prison-house of bondage, and feeling his curiosity excited to ascertain the principles and measures of the abolitionists,—of whom he had heard a somewhat vague description while he was a slave,—he was induced to give his attendance, on the occasion alluded to, though at that time a resident in New Bedford.
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Ordered by unknown words per 100. Lower reads easier; to step up a level, pick a higher number.
Computed by Readii from the public-domain text (updated 2026-10-21), not estimated by hand. The Readii reading level is our own scale, anchored on unknown-word density; it is not the same system as Lexile or AR and does not convert directly. Unknown words are measured against the CET-4 ∪ Gaokao lists, so this is difficulty for a Chinese-speaking learner, not a native-child reading level.