| Main Entry: |
covertly
|
| Part of Speech: | adverb |
| Definition: | clandestine, underhandedly |
| Synonyms: | by stealth, clandestinely, furtively, hush-hush, in camera, in holes and corners, on the QT, on the quiet, on the sly, privately, secretly, slyly, stealthily, sub rosa, surreptitiously, under wraps, undercover, wildcat |
| Antonyms: | candidly, frankly, honestly, openly, overtly, publicly |
| Main Entry: | surreptitious |
| Part of Speech: | adjective |
| Definition: | sneaky, secret |
| Synonyms: | clandestine, covert, fraudulent, furtive, hidden, hole-and-corner, hush-hush, on the QT, on the sly, private, skulking, slinking, sly, sneaking, stealthy, sub-rosa, unauthorized, under wraps, under-the-table, undercover, underhand, veiled |
| Antonyms: | aboveboard, authorized, honest, open |
| Main Entry: | underground |
| Part of Speech: | adjective |
| Definition: | secret, subversive |
| Synonyms: | alternative, avant-garde, clandestine, concealed, covert, experimental, hidden, hush-hush, on the QT, on the sly, private, radical, resistant, resistive, revolutionary, surreptitious, unbowed, unconventional, under wraps, undercover, unusual |
| Antonyms: | authorized, condoned, known, legal, public |
| Main Entry: | subterrestrial |
| Part of Speech: | adjective |
| Definition: | underground |
| Synonyms: | alternative, avant-garde, clandestine, concealed, covert, experimental, hidden, hush-hush, hypogeal, hypogean, hypogeous, on the QT, on the sly, private, radical, resistant, resistive, revolutionary, subterranean, surreptitious, unbowed, unconventional, under wraps, undercover, unusual |