Arousing or apt to arouse suspicion; questionable: suspicious behavior. (adjective)
Tending to suspect; distrustful: a suspicious nature. (adjective)
Expressing suspicion: a suspicious look. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "suspicious" in a sentence
"“Ladies,” he said, his expression suspicious as his gaze slid from one computer to another."
"One candidate, Yaroslau Ramanchuk,was in what he calls a suspicious car accident last week, and on Monday, he showed up for a meeting with students and professors in Minsk, the capital, only to learn that city authorities had closed down the hall where they were to get together because of "problems" with the sewage system."
"He saw an individual riding on a bicycle right here on the island in what he described as a suspicious manner."