| 释义 |
imˈpregnableness rare.
[f. prec. + -ness.]
= impregnability.
1603Knolles Hist. Turks (1621) 1170 Discouraged with the impregnablenes of the place. 1647Clarendon Contempl. Ps. in Tracts (1727) 419 The strength and impregnableness of his castles and forts. |