sus·​pi·​cious | \ sə-ˈspi-shəs \

Definition of suspicious

1 : tending to arouse suspicion : questionable suspicious characters
2 : disposed to suspect : distrustful suspicious of strangers
3 : expressing or indicative of suspicion a suspicious glance

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Other Words from suspicious

suspiciously adverb
suspiciousness noun

Examples of suspicious in a Sentence

We were instructed to report any suspicious activity in the neighborhood. The suspicious vehicle was reported to police. Suspicious characters were seen hanging around the bank. He found a suspicious lump on his back and was afraid it might be cancer. Officials are suspicious about her death. His manner made me suspicious.
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Recent Examples on the Web

To deal with the losses, Venmo stopped allowing customers to transfer funds instantly to their bank accounts and blacklisted tens of thousands of users deemed suspicious by algorithms. Peter Rudegeair, WSJ, "Venmo Caught Off Guard by Fraudsters," 24 Nov. 2018 Twitter, for example, recently purged a slew of suspicious accounts from its platform. Fox News, "Twitter brings in anti-Trump academics to combat intolerance," 2 Oct. 2018 For decades, New Mexico authorities were suspicious of the Aggressive Christianity Missions Training Corps but had no legal reason to investigate the militant religious sect. Chris Harris,, "Police Go Looking for Missing Boy in Cult's Compound and Allegedly Uncover Sex Abuse, Slave Labor," 28 June 2018 While detectives questioned Alden, NCIS got a tip about a suspicious fire nearly 20 miles from Alden and Wimunc's base at Camp Lejeune. CBS News, "Did a missing Army nurse fall prey to a serial killer targeting military women?," 26 June 2018 People were very suspicious of Alexandra’s close friendship with Rasputin. Anna Diamond, Smithsonian, "A Century Ago, the Romanovs Met a Gruesome End," 26 June 2018 Two suspicious fires broke out hours apart in south Houston Thursday morning, prompting an arson investigation and landing one firefighter in the hospital. Samantha Ketterer, Houston Chronicle, "2 fires blocks apart in south Houston spark arson investigation, send 1 firefighter to hospital," 21 June 2018 Earlier versions of Hamlet produced frames for interpretation—most memorably, Freudian ones—that led readers to be suspicious of their own capacity for self-understanding. Walt Hunter, The Atlantic, "When Hamlet Starts Showing Up in Federal Court," 13 June 2018 These communities have good reason to be suspicious of research because of past breaches of trust perpetrated by government programs — from the Tuskegee syphilis study to the Havasupai genetic study. Eric Dishman, STAT, "I handed over my genetic data to the NIH. Here’s why you should, too," 13 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'suspicious.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of suspicious

14th century, in the meaning defined at sense 1

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Last Updated

11 Jan 2019

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Time Traveler for suspicious

The first known use of suspicious was in the 14th century

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English Language Learners Definition of suspicious

: causing a feeling that something is wrong or that someone is behaving wrongly : causing suspicion

: having or showing a feeling that something is wrong or that someone is behaving wrongly : feeling or showing suspicion


sus·​pi·​cious | \ sə-ˈspi-shəs \

Kids Definition of suspicious

1 : likely to arouse suspicion suspicious actions
2 : likely to distrust or be distrustful Trolls are … mighty suspicious about anything new to them.— J. R. R. Tolkien, The Hobbit
3 : showing distrust a suspicious glance

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