suspect

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
    

Noun

• a person or institution against whom an action is brought in a court of law; the person being sued or accused

• someone who is under suspicion

Verb

• hold in suspicion; believe to be guilty
  • The U.S. suspected Bin Laden as the mastermind behind the terrorist attacks
    

• regard as untrustworthy; regard with suspicion; have no faith or confidence in

• imagine to be the case or true or probable
  • I suspect he is a fugitive
    
  • I surmised that the butler did it
    

Related words

• Synonyms: 
  fishy , funny , shady , suspicious , defendant , distrust , mistrust , surmise
• Antonyms: 
  plaintiff , complainant , trust , swear , rely , bank