About herself, Sonia wrote that she had succeeded in making some acquaintances in the town, that she did sewing, and, as there was scarcely a dressmaker in the town, she was looked upon as an indispensable person in many houses.
…later than to-morrow evening at eight o’clock precisely, and herewith I venture to present my earnest and, I may add, imperative request that Rodion Romanovitch may not be present at our interview—as he offered me a gross and unprecedented affront on the occasion of my visit to him in his illness yesterday, and, moreover, since I desire from you personally an indispensable and circumstantial explanation upon a certain point, in regard to which I wish to learn your own interpretation.
Porfiry pattered on, "and you know all these official duties…. please don’t mind my running up and down, excuse it, my dear fellow, I am very much afraid of offending you, but exercise is absolutely indispensable for me.
There are no more uses of "indispensable" in the book.
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Then a big pot was brought out as we raced to retrieve our indispensable spoons and bowls.
Leon Leyson -- The Boy on the Wooden Box
In fourteen years in Bluffton he had sired two sons and managed to worm his way so completely into Bennington’s life and make himself so indispensable that he sometimes seemed like Bennington’s third leg.