What is the Latin word for indispensable?

The usual Latin words for “indispensable” are necessārius, pernecessārius. The right choice depends on the sense; see the distinctions below.

English → Latin

“indispensable” in Latin

necessāriusunavoidable, inevitable; indispensable, requisite; necessary pernecessāriusvery necessary

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

indispensable

necessarius; for anything, ad aliquid. Quite indispensable, pernecessarius: maxime necessarius: anything is indispensable to me, aliqua re carere non possum: to show that anything is indispensable to us, nos aliqua re carere non posse probare.

Quick answer

What is the Latin word for indispensable?: The usual Latin words for “indispensable” are necessārius, pernecessārius. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.