英文词源
- impregnable
- impregnable: see prey
- impregnable (adj.)
- early 15c., imprenable "impossible to capture," from Middle French imprenable "invulnerable," from assimilated form of in- "not, opposite of" (see in- (1)) + Old French prenable "assailable, vulnerable" (see pregnable). With intrusive -g- 16c., on model of deign, reign, etc. Related: Impregnability.
中文词源
impregnable：坚不可催的
im-,不，非，pregnable,易受攻击的，词源同prehensile,插入字母g.即没法攻击的，坚不可催的。
该词的英语词源请访问趣词词源英文版：impregnable 词源，impregnable 含义。