To convert from a code or cipher to plaintext; decode. de·ci′pher·a·ble adj. de·ci′pher·er n.

Is decipherable a noun?

Decipherable is an adjective. The adjective is the word that accompanies the noun to determine or qualify it.

What do decipherable mean?

If something is decipherable, you can figure it out. Your dad's handwriting is terrible, but with a little work his note is decipherable. When you need to untangle clues or decode mysterious messages, you have to decipher them.