bookworm

American  

[book-wurm] / ˈbʊkˌwɜrm /

noun

1. a person devoted to reading or studying.

2. any of various insects that feed on books, especially a booklouse.

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bookworm British  

/ ˈbʊkˌwɜːm /

noun

1. a person excessively devoted to studying or reading

2. any of various small insects that feed on the binding paste of books, esp the book louse

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Usage

What does bookworm mean? A bookworm is someone who’s always reading, usually because they just love to read or because they’re studying or both.Bookworm is sometimes used negatively to make fun of people who love to read. But it is more commonly used in a positive way, especially by book lovers proudly calling themselves bookworms. Bookworm can also be used literally as a general name for any insect that eats books.Example: Bookworms usually have huge vocabularies, so be careful when you play one in Scrabble.

Etymology

Origin of bookworm

First recorded in 1590–1600; book + worm

Example Sentences

Just as when he’s poring over the playbook, the bearded bookworm reads with pen in hand or ready to note something on his phone.

From Los Angeles Times • Nov. 13, 2025

An under-the-radar prospect from Miami, Mendoza was such a bookworm in high school that some coaches stopped pursuing him because they questioned whether he really wanted to play football.

From The Wall Street Journal • Oct. 9, 2025

As a child, she was a "bookworm" who loved attending acting classes and workshops.

From BBC • Nov. 10, 2024

He was a lifelong bookworm who recalled taking out up to four novels a day from his local public library.

From Seattle Times • Jun. 14, 2023

In his own way, Gordy the bookworm was just as tough as Rowdy.

From "The Absolutely True Diary of a Part-Time Indian" by Sherman Alexie