inexpugnably

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in·ex·pug·na·ble

I0123700 (ĭn′ĭk-spŭg′nə-bəl, -spyo͞o′nə-)adj.1. Impossible to overcome or overthrow by force.2. Impossible to put aside or drive away: inexpugnable dislike.
[Middle English, from Old French, from Latin inexpugnābilis : in-, not; see in-1 + expugnābilis, capable of being overcome (from expugnāre : ex-, completely; see ex- + pugnāre, to fight; see impugn).]
in′ex·pug·na·bil′i·ty n.in′ex·pug′na·bly adv.