undated adj 1: not bearing a date; "a dateless letter" [syn: {dateless}, {undated}]
Undated \Un"da*ted\ ([u^]n"d[asl]*t[e^]d), a. [L. undatus, p. p. of undare to rise in waves, to wave, to undulate, fr. unda a wave. See {Undulate}.] (Bot.) Rising and falling in waves toward the margin, as a leaf; waved. [1913 Webster]
Undated \Un*dat"ed\ ([u^]n*d[=a]t"[e^]d), a. [Pref. un- not + dated.] Not dated; having no date; of unknown age; as, an undated letter. [1913 Webster]