'Suspicious' definitions:

Definition of 'suspicious'

From: WordNet
adjective
Openly distrustful and unwilling to confide [syn: leery, mistrustful, suspicious, untrusting, wary]
adjective
Not as expected; "there was something fishy about the accident"; "up to some funny business"; "some definitely queer goings-on"; "a shady deal"; "her motives were suspect"; "suspicious behavior" [syn: fishy, funny, shady, suspect, suspicious]

Definition of 'Suspicious'

From: GCIDE
  • Suspicious \Sus*pi"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] -- {Sus*pi"cious*ly}, adv. -- {Sus*pi"cious*ness}, n. [1913 Webster]

Synonyms of 'suspicious'

From: Moby Thesaurus