[1] : The Collaborative International Dictionary of English v.0.48

suspicious \suspi"cious\, a. oe. suspecious; cf. l.
   suspiciosus. see suspicion.
   1. inclined to suspect; given or prone to suspicion; apt to
      imagine without proof.
      1913 webster

            nature itself, after it has done an injury, will
            ever be suspicious; and no man can love the person
            he suspects.                          --south.
      1913 webster

            many mischievous insects are daily at work to make
            men of merit suspicious of each other. --pope.
      1913 webster

   2. indicating suspicion, mistrust, or fear.
      1913 webster

            we have a suspicious, fearful, constrained
            countenance.                          --swift.
      1913 webster

   3. liable to suspicion; adapted to raise suspicion; giving
      reason to imagine ill; questionable; as, an author of
      suspicious innovations; suspicious circumstances.
      1913 webster

            i spy a black, suspicious, threatening could.
                                                  --shak.
      1913 webster

   syn: jealous; distrustful; mistrustful; doubtful;
        questionable. see jealous.
        1913 webster -- suspi"ciously, adv. --
        suspi"ciousness, n.
        1913 webster
see also:
suspicion jealous suspi"ciously suspi"ciousness 

[2] : WordNet (r) 2.0

suspiciousness
     n : being of a suspicious nature; "his suspiciousness destroyed
         his marriage" syn: suspicion
see also:
suspicion 

Suspiciousness >> S Words
Suspiciousness, definition of term: Suspiciousness
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