uncrackable

形容词 adj.
中文释义

英文释义

形容词 adj.
  1. That cannot be cracked; unbreakable. not-comparable
  2. That cannot be broken into. not-comparable
    — 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

Etymology tree
Proto-Indo-European *né
Proto-Indo-European *n̥-
Proto-Germanic *un-
Proto-West Germanic *un-
Old English un-
Middle English un-
English un-
English crackable
English uncrackable
From un- + crackable.
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