Bumped Corners
A condition term describing dented, compressed, or slightly crumpled corners on a hardcover book, usually from being dropped or pressed against other objects.
In context
The description said 'two bumped corners, else fine' — she bought it anyway.
All four corners were bumped, which told her the book had lived on a real shelf in a real house.
Bumped corners are cosmetic, but they're usually the first thing a collector notices.
Bumped corners are the most common condition issue on hardcover books, and perhaps the most forgivable. The corners of a hardcover — where the cover boards meet at their edges — are the structural points most vulnerable to impact. A book dropped from waist height, corner first, will dent. A book packed too tightly against a rough surface will compress. Even careful handling, over years, accumulates small impacts at the corners until what was once a sharp, clean edge becomes slightly soft, rounded, or dented. This is bumping: localized compression at the corner without tearing, staining, or loss of material.
The condition grading language around bumped corners is practical and specific. "Lightly bumped" means the corners show a barely perceptible softening — noticeable on close inspection, barely visible at a glance. "Bumped" means the denting is clear. "Heavily bumped" or "badly bumped" means significant compression that's immediately obvious. The distinction matters for grading because bumped corners prevent a copy from reaching "fine" or "near fine" condition regardless of how perfect the rest of the book is. A copy with clean, square corners is explicitly noted as such in careful listings: "corners sharp" or "corners square" indicates this common flaw is absent.
Whether bumped corners matter depends entirely on your purpose. For a collector acquiring for value or for the pleasure of owning pristine condition copies, bumped corners are meaningful — they're one of the first things a knowledgeable buyer looks at when evaluating a hardcover. For a reader who wants to read the book, bumped corners are a cosmetic issue that has no effect on the text, the reading experience, or the physical durability of the binding. The book reads identically with dented corners.
Prevention focuses on handling and storage: avoid dropping books corner-first (obvious, but the most common cause), keep shelves at appropriate density so books aren't pressed hard against adjacent covers, use dust jacket protectors on hardcovers whose jackets you care about (the jacket protects the corners from light impacts). Books stored in boxes during a move are vulnerable to corner damage if they shift and hit the box edges; wrapping them individually in paper or placing them snugly enough that they can't move prevents this.
For anyone cataloging their own collection honestly — whether for insurance purposes or simply for their own records — bumped corners are worth noting. "Lightly bumped at two corners" is exactly the kind of specific, accurate description that distinguishes a useful catalog entry from a vague one. The goal of condition description is to let someone else (or future you) understand exactly what a copy looks like without seeing it.