The Collaborative International Dictionary of English v.0.48:

Late \Late\ (l[=a]t), a. [Compar. Later (l[=a]t"[~e]r), or
   latter (l[a^]t"t[~e]r); superl. Latest (l[=a]t"[e^]st) or
   Last (l[.a]st).] [OE. lat slow, slack, AS. l[ae]t; akin to
   OS. lat, D. laat late, G. lass weary, lazy, slack, Icel.
   latr, Sw. lat, Dan. lad, Goth. lats, and to E. let, v. See
   Let to permit, and cf. Alas, Lassitude.]
   1. Coming after the time when due, or after the usual or
      proper time; not early; slow; tardy; long delayed; as, a
      late spring.
      [1913 Webster]

   2. Far advanced toward the end or close; as, a late hour of
      the day; a late period of life.
      [1913 Webster]

   3. Existing or holding some position not long ago, but not
      now; recently deceased, departed, or gone out of office;
      as, the late bishop of London; the late administration.
      [1913 Webster]

   4. Not long past; happening not long ago; recent; as, the
      late rains; we have received late intelligence.
      [1913 Webster]

   5. Continuing or doing until an advanced hour of the night;
      as, late revels; a late watcher.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Later \La"ter\, n.; pl. Lateres. [L.]
   A brick or tile. --Knight.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Later \Lat"er\, a.
   Compar. of Late, a. & adv.
   [1913 Webster]

WordNet (r) 3.0 (2006):

later
    adv 1: happening at a time subsequent to a reference time; "he
           apologized subsequently"; "he's going to the store but
           he'll be back here later"; "it didn't happen until
           afterward"; "two hours after that" [syn: subsequently,
           later, afterwards, afterward, after, later on]
    2: at some eventual time in the future; "By and by he'll
       understand"; "I'll see you later" [syn: by and by, later]
    3: comparative of the adverb `late'; "he stayed later than you
       did"
    adj 1: coming at a subsequent time or stage; "without ulterior
           argument"; "the mood posterior to" [syn: later(a),
           ulterior, posterior]
    2: at or toward an end or late period or stage of development;
       "the late phase of feudalism"; "a later symptom of the
       disease"; "later medical science could have saved the child"
       [syn: late, later(a)] [ant: early]

Moby Thesaurus II by Grady Ward, 1.0:

85 Moby Thesaurus words for "later":
   after, after a time, after a while, after all, after that,
   afterward, afterwards, anon, approaching, attendant, before long,
   behind, by, by and by, by destiny, cadet, coming, consecutive,
   deathbed, desired, destinal, destined, determined, eleventh-hour,
   emergent, ensuing, eventual, ex post facto, extrapolated, fatal,
   fatally, fated, fatidic, following, forthcoming, future,
   futuristic, hereafter, hoped-for, hopefully, imminent, imminently,
   in aftertime, in the aftermath, in the future, in the sequel,
   junior, last-minute, late, latter, lineal, nearing, newly come,
   next, of yesterday, planned, plotted, posterior, predictably,
   predicted, probable, probably, projected, prophesied, prospective,
   proximo, puisne, recent, sequent, since, soon, subsequent,
   subsequently, succeeding, successive, then, thereafter, thereon,
   thereupon, therewith, to come, to-be, tomorrow, ultimate,
   younger