indispensable in Dutch
indispensable in Dutch
onmisbaar
(ecclesiastical, obsolete) Not admitting ecclesiastical dispensation; not subject to release or exemption; that cannot be allowed by bending the canonical rules. [16th–17th c.]
onontbeerlijk
Absolutely necessary or requisite; that one cannot do without. [from 17th c.]
onmisbaar
Absolutely necessary or requisite; that one cannot do without. [from 17th c.]