Tsundoku Meaning: The Pile of Unread Books, and How to Read It

How the word is built

Tsundoku is wordplay. Tsunde oku means to pile something up and leave it there: tsumu is to stack or load, and oku is to put down or leave. Doku is the Sino-Japanese reading of the kanji for reading, the same doku as in dokusho, reading books.

The joke is that tsunde oku sounds a little like tsundoku, so swapping the final part for the kanji for reading creates a new word that means stacking up instead of reading. It is written 積ん読, with a small n from the verb, or 積読 without it.

Where tsundoku comes from

The word is generally traced back to the Meiji period, in the late nineteenth century, when printed books and magazines were spreading quickly in Japan and owning more books than you read became a familiar joke. It has been in steady use ever since.

In recent years tsundoku has also become well known in English, often appearing in lists of Japanese words with no English equivalent. Unlike some borrowed words, its meaning did not change on the way: the English and Japanese uses are essentially the same.

• It began as a playful pun, not a formal term.
• It describes both the habit and the physical pile.
• The English use closely matches the Japanese one.
• It is humorous and self-deprecating in both languages.

How Japanese people use tsundoku today

Japanese readers post photos of their tsundoku on social media, write about tsundoku kaishō, clearing the backlog, and describe themselves as having a lot of tsundoku. It is a friendly word that invites the listener to admit they do the same.

The word works as a noun, and people also turn it into a verb with suru or naru, as in the book becoming tsundoku.

The last line is a popular half-joking defence: having books around means you might read them, and choosing them is already part of the pleasure.

Book and reading vocabulary

Tsundoku opens the door to a useful set of words about books, many of which have no neat English equivalent because they describe Japanese book formats and habits. Bunkobon are small, cheap paperbacks; tankōbon are standalone volumes, including collected manga; shinsho are slim non-fiction books on a single topic.

Ways of reading in Japanese

Japanese also has precise words for how you read, which are useful when you talk about your own study. Tadoku, extensive reading, means reading a lot of easy material for enjoyment. Seidoku, intensive reading, means reading carefully and analysing every word. Many learners have a tsundoku problem because they only try seidoku.

Why learners' Japanese books end up unread

Almost every Japanese learner has a small tsundoku pile: a novel bought in a Tokyo bookshop, a stack of manga, a graded reader set, a grammar book. The reasons are usually the same, and knowing them is half the fix.

• The book is too far above your level, so every page is a dictionary exercise.
• You try to understand every word instead of the story.
• There are no furigana, so unknown kanji block you completely.
• You wait for a long free block of time that never comes.
• The book is something you feel you should read, not something you want to read.

A plan to read the Japanese books you bought

Clearing a Japanese tsundoku pile is less about willpower and more about matching books to your level and making the habit tiny. Sort your pile first, then commit to a small amount every day.

Start with the easiest book, not the most impressive. Graded readers for learners, children's books with furigana and manga you already know in translation all work well. If a book has more than a few unknown words per line, put it back for later rather than forcing it; you have not failed, you have just found your next goal.

Read one page, or even half a page, every day. Guess unknown words from context and look up only the ones that keep appearing. Reading aloud, ondoku, helps you notice words you only half know and trains your pronunciation at the same time.

• Sort your pile into now, later and much later.
• Pick one book from now and keep it where you will see it.
• Read at least one page a day, even on busy days.
• Look up only repeated words; guess the rest.
• Keep a short list of new words and review them the next day.
• Say one sentence about what you read, out loud, in Japanese.

Talking about your reading in Japanese

Books are an easy and friendly topic of conversation in Japanese. These lines let you confess your tsundoku, recommend a book and ask for recommendations.