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From Old French sospecious, from Latin suspiciosus, suspitiosus.


  • IPA(key): /səˈspɪʃ.əs/
    • (file)
  • Rhymes: -ɪʃəs


suspicious (comparative more suspicious, superlative most suspicious)

  1. Arousing suspicion.
    Synonym: questionable
    His suspicious behaviour brought him to the attention of the police.
    • 1957, H. E. Bates, Death of a Huntsman:
      If their views were entrancing their sanitation was primeval; if they possessed stables they were also next to the gas-works; if their gardens were delightful there were odours suspicious of mice in the bedrooms.
  2. Distrustful or tending to suspect.
    Synonym: doubtful ; Antonym: unsuspecting
    I have a suspicious attitude to get-rich-quick schemes.
  3. Expressing suspicion
    She gave me a suspicious look.

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