What Is an Ambigram?

An ambigram is a word or design that can be read in more than one orientation: turned upside down, seen in a mirror, or looked at another way. It might read the same word again, or a different one.

Meaning and origin

The word was coined in 1983 by Douglas Hofstadter, the cognitive scientist best known for the book Gödel, Escher, Bach. It joins the Latin prefix ambi- (both) with the Greek -gram (drawing or writing). Before that, people called them vertical palindromes, inversions or simply upside-down words. Ambigram entered the Oxford English Dictionary in 2011 and Merriam-Webster in 2020.

Types of ambigrams

TypeHow it works
RotationalReads after a 180° turn, the same word or a different one. The most common type, and the one our ambigram generator makes.
MirrorReads in a reflection, either a vertical mirror or a horizontal surface like water.
Figure-groundA second word is hidden in the space between the letters of the first.
ChainA word repeats in a linked chain or circle that still reads when flipped.
SpinonymA word written with one shape repeated in different orientations.
Perceptual shiftReads two ways without moving it: your eye switches between readings.
3DA sculpture whose shadow or silhouette spells different words from different sides.

Natural ambigrams

Some words are ambigrams by accident. The lowercase letters o, s, x and z look the same upside down, and pairs like n and u, d and p, or b and q are rotations of each other. That's why swims reads the same after a half turn in most fonts. Designers build on the same idea, reshaping letters so pairs like a and e, h and y, or m and w line up.

A short history

Facts on this page are from the Wikipedia article on ambigrams.

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FAQ

What is an ambigram?

An ambigram is a word or design that can be read in more than one orientation, most often the same word after a 180-degree turn, or a different word.

Who invented the word ambigram?

The cognitive scientist Douglas Hofstadter, author of Gödel, Escher, Bach, coined the word in 1983. It combines the Latin prefix ambi- (both) and the Greek -gram (writing).

What is an example of an ambigram?

The word swims reads the same upside down in most fonts. Designed ambigrams include John Langdon's work for Dan Brown's novel Angels & Demons.

What are the types of ambigrams?

The main types are rotational (reads after a 180-degree turn), mirror (reads in a reflection), figure-ground (a second word in the space between letters) and chain (a repeating word that flips).