| sub-rosa(adjective, dishonest, secret, clandestine, sneaky) |
| sub rosa(expression, adjective, show, clandestine, quietly) |
| suppress(verb, calm, dull, quiet, still) |
| tongue-tie(verb, calm, dull, quiet, suppress) |
| top-secret(adjective, secret, clandestine, underground, undisclosed) |
| ulterior(separate, secret, hidden, underground, underhanded) |
| unrevealed(clandestine, underground, undisclosed) |
| ambiguous(careful, vague, wary, equivocal, clandestine) |
| artful(sneaky, covert, secretive) |
| backdoor(intimate, secret, private, clandestine, underground) |
| behind-the-scenes |
| black out |
| blackout(calm, quiet, speech, silence, softness) |
| buried(separate, secret, hidden, concealed, underhanded) |
| buttoned up(expression, careful, vague, reserved, ambiguous) |
| buttoning up(expression, adjective, quiet, reserved, secret) |
| by stealth(expression, clandestine, quietly, secretly, personally) |
| cabalistic |
| calm(noun, verb, dull, quiet, speech) |
| camouflaged(secret, hidden, clandestine, concealed, underhanded) |