Decryption and Decipher

noun

• The activity of making clear or converting from code into plain text.
  • usage: "a secret key or password is required for decryption"
  • synonyms: decoding, decipherment

verb

• Convert code into ordinary language.
  • synonyms: decode, decrypt
• Read with difficulty.
  • usage: "Can you decipher this letter"; "The archeologist traced the hieroglyphs"
  • synonyms: trace

• (v.t.) To translate from secret characters or ciphers into intelligible terms; as, to decipher a letter written in secret characters.
• (v.t.) To find out, so as to be able to make known the meaning of; to make out or read, as words badly written or partly obliterated; to detect; to reveal; to unfold.
• (v.t.) To stamp; to detect; to discover.