Undercover is a related term of concealed.
As an adjective undercover
is performed or happening in secret.
As a noun undercover
is a person who works.
As a verb concealed is
(conceal).
undercover
English
Adjective
(
en adjective)
Performed or happening in secret.
Employed or engaged in spying or secret investigation.
Synonyms
* clandestine
* See also
Related terms
* cloak-and-dagger
Noun
(
en noun)
A person who works .
concealed
English
Verb
(head)
(conceal)
Derived terms
* concealedly
* concealedness
Synonyms
* See also
* See also
Anagrams
*