unaccustomed

Adjective

unaccustomed (comparative more unaccustomed, superlative most unaccustomed)

1. Not used to an event or thing, not accustomed.
   • He is unaccustomed to the cold.
   • […] I again conveyed his Key into his Pocket, and counterfeiting Sleep, tho’ I never once cloſed my Eyes, lay in Bed till after he aroſe and went to Prayers, an Exerciſe to which I had long been unaccuſtomed.1749, Henry Fielding, “In which the Man of the Hill begins to relate his History”, in The History of Tom Jones, a Foundling, volume III, London: A[ndrew] Millar, […], →OCLC, book VIII, page 244
2. To which one is not accustomed, unfamiliar
   • Guerrilla warfare opens a field of activity for every local capacity, forces the enemy into an unaccustomed method of battle, avoids the evil consequences of a great defeat, secures the national war from the risk of treason, and has the advantage of not confining it within any defined and...1909, James Harvey Robinson, Charles Austin Beard, Readings in Modern European History: Europe since the Congress of Vienna, page 118
   • He stood transfixed before the unaccustomed view of London at night time, a vast panorama which reminded him […] of some wood engravings far off and magical, in a printshop in his childhood.1963, Margery Allingham, “Foreword: The Turk Street Mile”, in The China Governess: A Mystery, London: Chatto & Windus, →OCLC, page 11