verb
-pects; -pected; -pecting
[+ obj] to think that (someone) is possibly guilty of a crime or of doing something wrong
to think that (something) is possibly the cause of something bad - usually + of
to think that (a crime) has possibly been committed
to think that (something, especially something bad) possibly exists, is true, will happen, etc.
to have feelings of doubt about (something) :to be suspicious about (something)
noun
plural -pects
[count] a person who is believed to be possibly guilty of committing a crime
a thing that is thought of as a possible cause of something bad
the usual suspects
the usual people or things that are suspected or thought of in a particular situation - often used humorously
adjective
[more ~; most ~] :not able to be trusted :causing feelings of doubt or suspicion