unaccustomably

comparative more unaccustomably · superlative most unaccustomably

1. rareUnusually, unexpectedly, unaccountably.

   Finally, becauſe thoſe things which newly and vnaccuſtomably creepeth vp, ſtandeth need of new and speedy helpe […]

   1583 October 29, John Foxe, “The conſtitution of Thomas Arundell, agaynſt the followers of Gods truth”, in Actes and monuments of matters moſt ſpeciall and memorable happenyng in the Church […] , 4th edition, volume I, London: Iohn Daye, book V, page 529

   2 more examples

   For the veins being now unnaturally and unaccuſtomably emptied, they do attract to ſelves forthwith, from every place, and any bloud whatſoever.

   1651, Noah Biggs, Mataeotechnia medicinae praxeωs. The vanity of the craft of phyſick. […] , London: Edward Blackmore, →OCLC, ⁋ 230, pages 168-169

   The Austrian commander, Prince Charles, on receiving information concerning Frederick's advance, broke his camp at Breslau and marched toward his adversary. He was unaccustomably offering battle but only with the confidence stemming from greatly superior numbers.

   1977, Edward Schultz, The citizen-soldier, a factor in the making of the decisive battle: From the limited war of Frederick the Great to the unlimited warfare of Napoleon the First, Ottawa: University of Ottawa, →OCLC, page 24