unacclimatised

Tropics, unacclimatised, of poor stamina, and therefore peculiarly liable to fall victims to the fever and dysentery which follow upon exposure to tropical rain.

The Cruise of the Thetis A Tale of the Cuban Insurrection Harry Collingwood 1886

On the one hand, the former is accustomed to the climate, knows the country, and is trained to long marches and difficulties of all sorts inseparable from his daily life; the latter is unacclimatised, knows nothing of the country, and, accustomed to have his every want supplied, is at a loss when any extraordinary hardships or difficulties are encountered; he has only his skill in his arms and discipline in his favour, and sometimes that skill may be also possessed by his foe.

The Life of Gordon, Volume II Demetrius Charles Boulger 1890

The promise, for instance, of the case I have just named, the case of the account to be taken, in a circle of free talk, of a new and innocent, a wholly unacclimatised presence, as to which such accommodations have never had to come up, might well have appeared as limited as it was lively; and if these pages were not before us to register my illusion I should never have made a braver claim for it.

The Awkward Age Henry James 1879