illegibly (adverb)

1. The artist intentionally wrote the message in illegibly tiny letters, challenging viewers to decipher its meaning.

2. In the futuristic world of the novel, the secret code was written illegibly in a language unknown to mankind.

3. According to the ancient legend, the prophecy revealing the hero's true destiny was illegibly etched onto a hidden stone tablet.

4. The cryptic letter found in the abandoned haunted house was illegibly smeared with blood, adding to the sense of dread and mystery.