Adverb
In an indispensable manner.
Source: Webster's dictionaryHe has no right to his life when his duty calls him to resign it. Other men are bound... to deprive him of life or liberty, if that should appear in any case to be indispensably necessary to prevent a greater evil. William Godwin
Not to discontinue our allegiance, in this case, would be to join with the sovereign in promoting the slavery and misery of that society, the welfare of which, we ourselves, as well as our sovereign, are indispensably obliged to secure and promote, as far as in us lies. Jonathan Mayhew
Justice is indispensably and universally necessary, and what is necessary must always be limited, uniform, and distinct. Samuel Johnson
EMCCD cameras indispensably need a cooling system using either thermoelectric cooling or liquid nitrogen to cool the chip down to temperatures in the range of convert. Source: Internet
It would be a poor method, since this possibility of transgression tells us immediately and indispensably about the structure of the act said to be normal as well as about the structure of law in general. Source: Internet