A few people eventually told me they were suspicious but afraid to say anything.
From the dailyherald.com
The blaze is considered suspicious, according to the Sacramento Fire Department.
From the sacbee.com
That way you'll be able to recognise suspicious people roaming around your hall.
From the dailymail.co.uk
Yet without a decoy, a tom turkey responding to hen sounds gets very suspicious.
From the timesunion.com
There is no evidence of third party involvement and the death is non suspicious.
From the telegraph.co.uk
Naturally suspicious, neither government offers the offer anything constructive.
From the economist.com
Anyone approached out of the blue with an investment offer should be suspicious.
From the thisismoney.co.uk
Examining your skin for suspicious moles and other lesions could save your life.
From the theepochtimes.com
Underneath all this, however, there's a suspicious undercurrent of class issues.
From the ecocentric.blogs.time.com
More examples
Leery: openly distrustful and unwilling to confide
Fishy: 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"
(suspiciousness) suspicion: being of a suspicious nature; "his suspiciousness destroyed his marriage"
(suspicion) intuition: an impression that something might be the case; "he had an intuition that something had gone wrong"
(suspicion) misgiving: doubt about someone's honesty
(Suspicion (1982 film)) is a 1982 Japanese film directed by Yoshitaro Nomura.
(Suspicion (Death Note episode)) The Japanese animation television series Death Note, is based on the manga series written by Tsugumi Ohba and illustrated by Takeshi Obata. ...
(Suspicion (emotion)) Suspicion is a cognition of mistrust in which a person doubts the honesty of another person or believes another person to be guilty of some type of wrongdoing or crime, but without sure proof. ...
(Suspicion (movie)) Suspicion (1941) is a romantic psychological thriller directed by Alfred Hitchcock, and starring Cary Grant and Joan Fontaine as a married couple. It also stars Sir Cedric Hardwicke, Nigel Bruce, Dame May Whitty, Isabel Jeans and Heather Angel.