Synonyms of illegible

illegible

adjective

(ˌ)i(l)-ˈle-jə-bəl 

as in unreadable

incapable of being read or deciphered

illegible signatures on the petition will be disregarded

Synonyms & Similar Words

• unreadable
• obscure
• indecipherable
• faint
• undecipherable
• unclear
• indistinct

Antonyms & Near Antonyms

• legible
• readable
• clean
• fair
• decipherable

Example Sentences

Recent Examples of illegible

On both, as ever, his illegible mumble suggests shame in his own voice, or even guilt about being here at all (some of his enduring illnesses relate to PTSD from cradling a dying friend in his lap after a gang attack as a teen). — Jazz Monroe, Pitchfork, 30 July 2026

But, outside of clothing items and a set of denture plates inscribed with a partially illegible set of numbers, there was too little evidence recovered from the scene to generate leads in the case. — Emily Mae Czachor, CBS News, 29 July 2026

On many, the names, birth years and death years are illegible. — Kamal Morgan. Produced With Ai Assistance, Fort Worth Star-Telegram, 29 June 2026

Federal grievances may be thrown out for being trivial, illegible or not pertaining to an issue that can be addressed through the bureau's system. — Christie Thompson, NPR, 17 June 2026