подозрителен означава в английски

distrustful▼(marked by distrust; doubtful; suspicious)
adjective
[UK: dɪs.ˈtrʌst.fəl] [US: ˌdɪ.ˈstrəst.fəl]

doubtful▼(suspicious, or of dubious character)
adjective
[UK: ˈdaʊt.fʊl] [US: ˈdaʊt.fəl]

fishy [fishier, fishiest]▼(suspicious; inspiring doubt)
adjective
[UK: ˈfɪ.ʃi] [US: ˈfɪ.ʃi]

leery [leerier, leeriest]▼(Cautious, hesitant, or nervous about something; having reservations or concerns)
adjective
[UK: ˈlɪ.ri] [US: ˈlɪ.ri]

suspect▼(viewed with suspicion)
adjective
[UK: sə.ˈspekt] [US: sə.ˈspekt]

suspicious▼(arousing suspicion)
adjective
[UK: sə.ˈspɪ.ʃəs] [US: sə.ˈspɪ.ʃəs]