modified
oddly, queerly, newly, unfamiliarly, unnaturally, uncommonly, exceptionally, remarkably, rarely, fantastically, amazingly, surprisingly, startlingly, strikingly, singularly, remarkably, unutterably, indescribably, peculiarly, ineffably, uniquely, unusually, uncustomarily, astonishingly, exotically, marvelously.
Antonyms regularly*, commonly, usually.