1 secret /ˈsiːkrət/ adjective
1 secret
Learner's definition of SECRET
: kept hidden from others : known to only a few people
see also secret agent, secret police, secret service, top secret
[more secret; most secret] : keeping information hidden from others : secretive

— secretly

2 secret /ˈsiːkrət/ noun
plural secrets
2 secret
plural secrets
Learner's definition of SECRET
: a fact or piece of information that is kept hidden from other people
see also trade secret
: a special or unusual way of doing something to achieve a good result
: something that cannot be explained

in secret

: in a private place or manner

make no secret of

: to show or express (something) openly : to not try to hide (something)