скришом angolul

stealthily▼(in a stealthy manner)
adverb
[UK: ˈstel.θɪ.li] [US: ˈstel.θɪ.li]

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