plaintext

/P L EY1 N T EH0 K S T/
noun
  1. 1

    Text or any data that is to be encrypted (as opposed to ciphertext).

    โ€œUsing the sophisticated code was useless since the spy merely stole the plain text from the waste basket.โ€

  2. 2

    Data which consists only of human-readable text, as opposed to machine-readable binary data or formatting markup.

Source: https://en.wiktionary.org/wiki/plain%20text, https://en.wiktionary.org/wiki/plaintext