| secretly(adverb, show, clandestine, secretly, furtively) |
| covertly(noun, adverb, show, quietly, secretly) |
| on the sly(noun, expression, idiom, adverb, show) |
| surreptitiously(noun, adverb, clandestine, quietly, secretly) |
| confidentially(adverb, secretly) |
| furtively(noun, adverb, clandestine, quietly, secretly) |
| stealthily(noun, adverb, clandestine, quietly, secretly) |
| privately(adverb, clandestine, quietly, secretly, personally) |
| sub rosa(adverb, show, clandestine, quietly, secretly) |
| by stealth(expression, idiom, adverb, show, clandestine) |
| in secret(expression, idiom, adverb) |
| on the q.t(noun, adverb) |
| or Q.T.(noun, adverb) |
| quietly(noun, adverb, secretly, personally, privately) |
| slyly(noun, adverb, clandestine, quietly, secretly) |
| sneakily(noun, adverb) |
| clandestine(adjective, adverb, secretly, slyly, underhandedly) |
| hiddenly |
| huggermugger(adverb, show, secretly) |
| in camera(expression, adverb, clandestine, quietly, secretly) |