Undated

• POS: Adjective
• HYPHEN: un=dat=ed

CIDE DICTIONARY

Undated, a. [L. undatus, p. p. of undare to rise in waves, to wave, to undulate, fr. unda a wave. See Undulate.].

 Rising and falling in waves toward the margin, as a leaf; waved.  [1913 Webster]

Undated, a. [Pref. un- not + dated.].

 Not dated; having no date; of unknown age; as, an undated letter.  [1913 Webster]

OXFORD DICTIONARY

Undated, adj. not provided or marked with a date.

ROGET THESAURUS

Undated

Anachronism

N anachronism, metachronism, parachronism, prochronism, prolepsis, misdate, anticipation, antichronism, disregard of time, neglect of time, oblivion of time, intempestivity, misdated, undated, overdue, past due, out of date.

Convolution

N convolution, winding, convolution, involution, circumvolution, wave, undulation, tortuosity, anfractuosity, sinuosity, sinuation, meandering, circuit, circumbendibus, twist, twirl, windings and turnings, ambages, torsion, inosculation, reticulation, rivulation, roughness, coil, roll, curl, buckle, spiral, helix, corkscrew, worm, volute, rundle, tendril, scollop, scallop, escalop, kink, ammonite, snakestone, serpent, eel, maze, labyrinth, knot, convoluted, winding, twisted, tortile, tortive, wavy, undated, undulatory, circling, snaky, snake-like, serpentine, serpent, anguill, vermiform, vermicular, mazy, tortuous, sinuous, flexuous, anfractuous, reclivate, rivulose, scolecoid, sigmoid, sigmoidal, spiriferous, spiroid, involved, intricate, complicated, perplexed, labyrinth, labyrinthic, labyrinthian, labyrinthine, peristaltic, daedalian, kinky, knotted, wreathy, frizzly, crepe, buckled, raveled, spiral, coiled, helical, cochleate, cochleous, screw-shaped, turbinated, turbiniform, in and out, round and round, a can of worms, Gordian knot.