Expressions

a shady character
someone you cannot trust

a five o’clock shadow
a dark beard coming through again

a shadow of his former live
someone who has fallen on hard times
(an a-list star who is now a b-list star)

shadowed (by the police)
someone following you

coming out of the shadow
if somebody begins to develop

the shadow self
the parts of us, that we don’t want to recognize

beyond the shadow of a doubt
completely believed