Choose the word that can substitute the given group of words.

Incapable of being read

Illegible

The word that can substitute the given group of words is illegible.

• Illegible means not able to be read or deciphered.
• Comprehensive means covering a wide range of material or topics.
• Decipherable means able to be deciphered or understood.
• Corrupt means not genuine or authentic; not in accordance with the original.

Illegible is the most appropriate word for the given group of words because it specifically refers to something that cannot be read or deciphered. It is derived from the Latin word illegibilis, meaning "not able to be read."