There's nothing more contagious than the laughter of young children; it doesn't even have to matter what they're laughing about.
I'm sort of suspicious of most economic development projects, but the ones that encourage taxpayer-funded relocation bidding wars should be declared unconstitutional.
I've always been very suspicious of the left-right dimension in politics.
Many journalists are influenced by a myopic multiculturalism that is suspicious of anything Western, while giving the benefit of the doubt to non-Western societies.
Better to be occasionally cheated than perpetually suspicious.
Self-respect: the secure feeling that no one, as yet, is suspicious.
Plagiarists are always suspicious of being stolen from.