"a curious child is a teacher's delight"; "a trap door that made me curious"; "curious investigators"; "traffic was slowed by curious rubberneckers"; "curious about the neighbor's doings"
"a curious hybrid accent"; "her speech has a funny twang"; "they have some funny ideas about war"; "had an odd name"; "the peculiar aromatic odor of cloves"; "something definitely queer about this town"; "what a rum fellow"; "singular behavior"
"there was something fishy about the accident"; "up to some funny business"; "some definitely queer goings-on"; "a shady deal"; "her motives were suspect"; "suspicious behavior"
"The U.S. suspected Bin Laden as the mastermind behind the terrorist attacks"
"I suspect he is a fugitive"; "I surmised that the butler did it"