Definition

Something that cannot be understood or read because it is unclear or difficult to interpret.

Example

The ancient script was so worn that it was indecipherable to the archaeologists.

Conversation

Did you see the note from Sarah?

Yeah, but it's totally indecipherable!

I know, right? I couldn't make sense of it at all.

Maybe we should ask her to explain it.

Synonyms & Antonyms

Root Explanation

Indecipherable is formed from "in-" (meaning not) and "decipher" (from Old French *decifrer*, meaning to decode or interpret). The word means something that cannot be decoded or understood.

Memory Tip

Think of something that is 'not' ('in-') able to be 'decoded' ('decipher') — that's why indecipherable means it cannot be understood.

Visually Confused Words