tajně angolul

secretly▼(in a secret manner)
adverb
[UK: ˈsiː.krɪt.li] [US: ˈsiː.krət.li]

surreptitiously▼(in a surreptitious manner)
adverb
[UK: ˌsʌ.rəp.ˈtɪ.ʃə.sli] [US: ˌsʌ.rəp.ˈtɪ.ʃə.sli]