Definition of "insalubrious"

What in the name of Common Sense is to recommend Brinshore?—A most insalubrious Air—Roads proverbially detestable—Water Brackish beyond example, impossible to get a good dish of Tea within 3 miles of the place—& as for the Soil—it is so cold & ungrateful that it can hardly be made to yeild[sic] a Cabbage.

1817 (date written), Jane Austen, chapter 1, in R[aymond] W[ilson] Chambers, editor, Fragment of a Novel Written by Jane Austen, January–March 1817 […], Oxford, Oxfordshire: Clarendon Press, published 1925, page 16