The Collaborative International Dictionary of English v.0.48:

Curtail \Cur*tail"\ (k[u^]r*t[=a]l"), v. t. [imp. & p. p.
   Curtailed (-t[=a]ld"); p. pr. & vb. n. Curtailing.] [See
   Curtal.]
   To cut off the end or tail, or any part, of; to shorten; to
   abridge; to diminish; to reduce.
   [1913 Webster]

         I, that am curtailed of this fair proportion. --Shak.
   [1913 Webster]

         Our incomes have been curtailed; his salary has been
         doubled.                                 --Macaulay.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

59 Moby Thesaurus words for "curtailed":
   abated, abbreviated, ablated, abridged, abstracted, attenuated,
   bated, belittled, bobbed, capsule, capsulized, clipped, compressed,
   condensed, consumed, contracted, cropped, cut short, decreased,
   deflated, digested, diminished, dissipated, docked, dropped,
   elided, elliptic, eroded, fallen, less, lesser, lower, lowered,
   miniaturized, mowed, mown, nipped, pollard, polled, pruned, reaped,
   reduced, retrenched, scaled-down, shaved, sheared, shorn,
   short-cut, shortened, shorter, shrunk, shrunken, smaller, snub,
   snubbed, trimmed, watered-down, weakened, worn