uncrackable

释义与例句

adj.
  1. 1.

    That cannot be cracked; unbreakable.

  2. 2.

    That cannot be broken into.

    1914, Ernest Bramah, Max Carrados I may as well inform you that no crib is really uncrackable, though the Cyrus J. Coy Co.'s Safe Deposit on West 24th Street, N.Y., comes nearest the kernel.

词源

From un- + crackable.

来源：wiktionary