| furtively(adverb, close, hideaway, arcane, stealth) |
| covertly(adverb, close, show, hideaway, arcane) |
| stealthily(adverb, close, hideaway, arcane, stealth) |
| surreptitiously(adverb, close, hideaway, arcane, stealth) |
| privately(adverb, close, hideaway, arcane, stealth) |
| clandestinely(adverb, show, clandestine, furtively, slyly) |
| in secret(expression, idiom, adverb, concealment, slyly) |
| confidentially |
| slyly(adverb, clandestine, furtively, underhandedly, surreptitiously) |
| on the sly(expression, idiom, adverb, show, clandestine) |
| quietly(adverb, privately) |
| underhandedly(adverb, close, hideaway, arcane, stealth) |
| incognito(adverb, close, hideaway, arcane, stealth) |
| intimately(adverb, privately) |
| personally(adverb, closely, privately, slyly, confidentially) |
| by stealth(expression, idiom, adverb, show, clandestine) |
| in private(expression, idiom, concealment, confidentially) |
| latently(adverb, close, hideaway, arcane, stealth) |
| secretively(adverb, close, hideaway, arcane, stealth) |
| sub rosa(expression, adverb, show, clandestine, slyly) |