skvallra bedeutet auf Englisch

snitch [snitched, snitching, snitches]▼(inform on)
verb
[UK: snɪtʃ] [US: ˈsnɪtʃ]

tell on▼(to tell someone that someone else has done something wrong)
verb
[UK: tel ɒn ˈsʌm.bə.di] [US: ˈtel ɑːn ˈsʌm.ˌbɑː.di]