The Collaborative International Dictionary of English v.0.48:

Discontinue \Dis`con*tin"ue\, v. t. [imp. & p. p.
   Discontinued; p. pr. & vb. n. Discontinuing.] [Cf. F.
   discontinuer.]
   To interrupt the continuance of; to intermit, as a practice
   or habit; to put an end to; to cause to cease; to cease
   using, to stop; to leave off.
   [1913 Webster]

         Set up their conventicles again, which had been
         discontinued.                            --Bp. Burnet.
   [1913 Webster]

         I have discontinued school
         Above a twelvemonth.                     --Shak.
   [1913 Webster]

         Taught the Greek tongue, discontinued before in these
         parts the space of seven hundred years.  --Daniel.
   [1913 Webster]

         They modify and discriminate the voice, without
         appearing to discontinue it.             --Holder.
   [1913 Webster]

WordNet (r) 3.0 (2006):

discontinued
    adj 1: stopped permanently or temporarily; "discontinued
           models"; "a discontinued magazine"; "a discontinued
           conversation" [ant: continued]

Moby Thesaurus II by Grady Ward, 1.0:

63 Moby Thesaurus words for "discontinued":
   abandoned, abjured, antiquated, antique, archaic, broken,
   broken off, chopped-off, choppy, decousu, deserted, disconnected,
   discontinuous, discrete, disjunctive, disused, done with, episodic,
   fitful, herky-jerky, incoherent, intermittent, interrupted,
   irregular, jagged, jerky, noncontinuous, nonlinear, nonsequential,
   nonserial, nonuniform, not worth saving, obsolescent, obsolete,
   old, old-fashioned, on the shelf, out, out of use, out-of-date,
   outdated, outmoded, outworn, parenthetic, past use, patchy,
   pensioned off, relinquished, renounced, resigned, retired, scrappy,
   snatchy, spasmodic, spotty, superannuate, superannuated,
   superseded, suspended, unconnected, unjoined, unsuccessive,
   worn-out