The Collaborative International Dictionary of English v.0.48:

Remittent \Re*mit"tent\ (r?-m?t"tent), a. [L. remittens, p. pr.
   : cf. F. r['e]mittent.]
   Remitting; characterized by remission; having remissions.
   [1913 Webster]

   Remittent fever (Med.), a fever in which the symptoms
      temporarily abate at regular intervals, but do not wholly
      cease. See Malarial fever, under Malarial.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

decreased \decreased\ adj.
   made less in size or amount or degree. Opposite of
   increased. [Narrower terms: attenuate, attenuated, faded,
   weakened; belittled, diminished, small; cut, cut-rate;
   diminished, lessened; minimized; remittent;
   attenuated]

   Syn: reduced.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

remittent
    adj 1: (of a disease) characterized by periods of diminished
           severity; "a remittent fever"

Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "remittent":
   calenture, childbed fever, continued fever, delirium,
   eruptive fever, febricity, febrility, fever, fever heat,
   feverishness, fire, flush, heat, hectic, hectic fever,
   hectic flush, hyperpyrexia, hyperthermia, intermittent fever,
   protein fever, puerperal fever, pyrexia, relapsing fever,
   remittent fever, urethral fever, vaccinal fever, water fever,
   wound fever