undisclosed

adj. 未经透露的,身分不明的

underwear, underweight, underwent, underworld, underwrite, underwriter, undeserved, undeservedly, undeserving, undesignated, undesirable, undesirably, undetectable, undeterred, undeveloped, undid, undies, undignified, undirected, undischarged, undiscovered, undisputed, undistinguished, undisturbed, undivided, undo, undoing, undone, undoubted, undoubtedly, undreamed-of, undress, undressed, undrinkable, undue, undulate, undulation, unduly, undying, unearned,