| Main Entry: | undercover |
| Part of Speech: | adjective |
| Definition: | secret, spy |
Synonyms: |
clandestine, concealed, confidential, covert, creep, furtive, hidden, hole-and-corner, hush-hush, incognito*, intelligence, on the QT, private, stealth, stealthy, sub-rosa, surreptitious, under wraps, underground, underhand, underneath |
Antonyms: |
known, open, public |