Dictionary.com
Thesaurus.com
Synonyms

illegible

American  
[ih-lej-uh-buhl] / ɪˈlɛdʒ ə bəl /

adjective

  1. not legible; impossible or hard to read or decipher because of poor handwriting, faded print, etc..

    This letter is completely illegible.


illegible British  
/ ɪˈlɛdʒɪbəl /

adjective

  1. unable to be read or deciphered

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of illegible

First recorded in 1605–15; il- 2 + legible

Explanation

When your friend scribbles a note to you and you can’t figure out what it says, it’s because her handwriting is illegible — it’s unreadable. The adjective illegible is often used to describe handwriting, because people tend to have their own styles and sometimes write in a pretty messy way. But it can also refer to printed words that are faded or for some other reason difficult to read. If you leave a book open in the rain, the print will probably become illegible. If you’re walking in an old graveyard, the writing on the tombstones is often illegible.

Keep Reading on Vocabulary.com

Vocabulary lists containing illegible

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The painting, Interior: The Lady in Black, hung in her living room for 60 years - but the artist's signature was illegible and was only recently identified.

From BBC • Jun. 5, 2026

Looking at his police file, I can hardly read the signature over his statement; his name is illegible, scrawled and messy, like that of a boy.

From Slate • May 12, 2026

Both the paintings and the earthenware are scribbled with an illegible stream of consciousness poetry that Finley is channeling while making the work — often only visible in texture when the light hits right.

From Los Angeles Times • Nov. 6, 2025

There is an illegible history that you only really learn growing up in a place.

From Salon • Aug. 20, 2024

The rectangular burlap bags, their faded black letters illegible in the dark.

From "Tristan Strong Punches a Hole in the Sky" by Kwame Mbalia

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "illegible" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com