Dictionary.com
Thesaurus.com
Synonyms

suspect

American  
[suh-spekt, suhs-pekt, suhs-pekt, suh-spekt] / səˈspɛkt, ˈsʌs pɛkt, ˈsʌs pɛkt, səˈspɛkt /

verb (used with object)

  1. to believe to be guilty, false, counterfeit, undesirable, defective, bad, etc., with little or no proof.

    to suspect a person of murder.

  2. to doubt or mistrust.

    I suspect his motives.

  3. to believe to be the case or to be likely or probable; surmise.

    I suspect his knowledge did not amount to much.

    Synonyms:
    suppose, conjecture, guess
  4. to have some hint or foreknowledge of.

    I think she suspected the surprise.


verb (used without object)

  1. to believe something, especially something evil or wrong, to be the case; have suspicion.

noun

  1. a person who is suspected, especially one suspected of a crime, offense, or the like.

  2. an animal or thing that is suspected to be the cause of something bad: The cause of the disease was not confirmed, but the suspect was an insect.

    Investigators focused on faulty wiring as a suspect in the house fire.

    The cause of the disease was not confirmed, but the suspect was an insect.

adjective

  1. suspected; open to or under suspicion.

idioms

  1. the usual suspects, the people, animals, or things that are commonly associated with a particular activity, situation, etc. (often used facetiously).

    We visited a family farm with sheep and bunnies and roosters and goats—the usual suspects!

suspect British  

verb

  1. (tr) to believe guilty of a specified offence without proof

  2. (tr) to think false, questionable, etc

    she suspected his sincerity

  3. (tr; may take a clause as object) to surmise to be the case; think probable

    to suspect fraud

  4. (intr) to have suspicion

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. a person who is under suspicion

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. causing or open to suspicion

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What does sus mean? Sus is a shortening of suspicious or suspect. In slang, it has the sense of "questionable" or "shady."

Other Word Forms

  • nonsuspect noun
  • presuspect verb (used with object)
  • suspecter noun
  • suspectible adjective
  • suspectless adjective
  • unsuspecting adjective
  • unsuspectingly adverb

Etymology

Origin of suspect

First recorded in 1250–1300; Middle English (adjective) from Latin suspectus, past participle of suspicere “to look up, look and see, regard with mistrust,” equivalent to su- “under, below, beneath” + -spicere, combining form of specere “to see, observe, keep an eye on, take into consideration”; (verb) partly from the adjective, partly from Middle French suspecter “to hold suspect,” or directly from Latin suspectāre, frequentative of suspicere; see su-

Explanation

A suspect is a person who is believed to be guilty of a crime. If you leave the scene of a murder with blood on your hands and a weapon in your pocket, you’re likely to become a prime suspect. If others believe you have committed a crime, you are a suspect. The word can also be used as a verb and an adjective. To suspect someone of something is to believe that they probably did it. Do you ever suspect your parents of taking some of your Halloween candy? If something such as someone's excuse or motive is suspect, it seems a bit off. That bad-smelling piece of fish is suspect — you'd better not eat it.

Keep Reading on Vocabulary.com

Vocabulary lists containing suspect

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A third suspect was arrested soon after inside a car matching the initial 911 caller’s description.

From Los Angeles Times • Apr. 28, 2026

In response to a question about whether the suspect fired shots, Blanche said, “We want to get that right so we’re still looking at that.”

From The Wall Street Journal • Apr. 28, 2026

Dressed in a blue jumpsuit with a nametag, the suspect appeared calm at Monday's court appearance in the nation's capital.

From BBC • Apr. 27, 2026

Leavitt said the Secret Service successfully neutralized the suspect and cleared the president, first lady and vice president from the room within minutes.

From Los Angeles Times • Apr. 27, 2026

If one were inclined to believe in the supernatural, one might even suspect that the bakehouse at Ashton Place had fallen under some sort of a curse!

From "The Long-Lost Home" by Maryrose Wood