Definition of suspicious in English:

suspicious

Line breaks: sus|pi¦cious
Pronunciation: /səˈspɪʃəs
 
/

adjective

1Having or showing a cautious distrust of someone or something: he was suspicious of her motives she gave him a suspicious look
More example sentences
  • No wonder people are suspicious of politicians and the political process.
  • In fact he was suspicious of any technological advance that might weaken the ‘master race’.
  • She is suspicious of doctors and nurses and takes her medication only episodically.
Synonyms
doubtful, unsure, dubious, wary, chary, sceptical, distrustful, mistrustful, disbelieving, having reservations, apprehensive, cynical, jaundiced
informal iffy
1.1Causing one to have the idea or impression that someone or something is questionable, dishonest, or dangerous: they are not treating the fire as suspicious
More example sentences
  • The death was initially treated as suspicious and Hardy was questioned.
  • I actually think there is something suspicious in the idea from the start.
  • You mentioned the suspicious package was left in front of that precinct building.
Synonyms
disreputable, unsavoury, dubious, suspect, guilty-looking, dishonest-looking, strange-looking, queer-looking, funny-looking, slippery
informal shifty, shady
British informal dodgy
questionable, odd, strange, dubious, irregular, queer, funny, doubtful, not quite right, under suspicion, mysterious, murky, dark, criminal, dishonest, corrupt
informal fishy, shady, dodgy
1.2Having the belief or impression that someone is involved in an illegal or dishonest activity: police were called when staff became suspicious
More example sentences
  • A firm in the USA became suspicious about the activities of an employee.
  • As someone who works in the unions, what do you tell activists who are suspicious about the union movement?
  • As the scam unfolded that night in the studio, production staff became suspicious.

Origin

Middle English: from Old French suspicious, from Latin suspiciosus, from suspicio(n-) (see suspicion).

Derivatives

suspiciously

adverb
[as submodifier]: it’s suspiciously cheap
More example sentences
  • They stopped by my taster display of crystallised ginger and eyed it suspiciously.
  • I know of others where suspiciously cheap jars of Iranian caviar can still sometimes be bought.
  • People in the town are being urged to be vigilant and report immediately anyone they see acting suspiciously.

suspiciousness

noun
More example sentences
  • Another couple shared the cab with us, all of us casting our New York-trained suspiciousness of strangers to the winds.
  • As individual paranoia involves the ‘irrational suspiciousness and distrustfulness of others,’ so too does news media thrive on the next big terror.
  • I recognise the imperial shelteredness, the island suspiciousness, the old-world cultivation of private hopes and habits which leave the status quo alone.

Definition of suspicious in:

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Word of the day flagitious
Pronunciation: fləˈdʒɪʃəs
adjective
(of a person or their actions) criminal; villainous