Defn: Incapable of being subdued by force; impregnable; unconquerable. Burke. A fortress, inexpugnable by the arts of war. Milman.

INEXPUGNABLY
In`ex*pug"na*bly, adv.

Defn: So as to be inexpugnable; in an inexpugnable manner. Dr. H.
More.

INEXSUPERABLE
In`ex*su"per*a*ble, a. Etym: [L. inexsuperabilis; pref. in- not +
exsuperabilis that may be surmounted. See In- not, Ex-, and
Superable.]

Defn: Not capable of being passed over; insuperable; insurmountable.

INEXTENDED
In`ex*tend"ed, a.

Defn: Not extended.

INEXTENSIBLE
In`ex*ten"si*ble, a.

Defn: Not capable of being extended; not elastic; as, inextensible fibers.

INEXTENSION
In`ex*ten"sion, n.