Cryptic (adjective)

1. Having a meaning that is hidden or difficult to understand.
2. Being obscure or mysterious in meaning.
3. Being difficult to interpret or understand.

Origin:

From greek kryptos, meaning hidden.

Examples:

1. The cryptic message left many people confused.
2. The cryptic symbol on the ancient monument remains a mystery.
3. The artist's cryptic statements about his work left many people wondering.
4. The poet's cryptic verse was filled with hidden meanings.
5. The cryptic crossword was challenging to solve.