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suspicious

adjective (DOUBT)
 
 
/səˈspɪʃ.əs/

Definition

B2 feeling doubt or no trust in someone or something: His colleagues became suspicious (= thought that there was something wrong) when he did not appear at work, since he was always punctual. They are deeply/highly (= very) suspicious of one another/of each other's motives. My mother has a very suspicious nature (= does not trust people).Suspecting and questioningQuestioning people and asking questions in generalCuriosity
(Definition of suspicious adjective (DOUBT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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