know somebody/something inside out

US /noʊ ˈsʌm.bə.di ˈsʌm.θɪŋ ˌɪn.saɪd ˈaʊt/
UK /noʊ ˈsʌm.bə.di ˈsʌm.θɪŋ ˌɪn.saɪd ˈaʊt/
"know somebody/something inside out" picture
1.

tahu luar dalam, sangat mengenal

to know someone or something extremely well

:
She's worked here for twenty years, so she knows the company inside out.
Dia sudah bekerja di sini selama dua puluh tahun, jadi dia tahu perusahaan luar dalam.
He's a local, so he knows this area inside out.
Dia penduduk lokal, jadi dia tahu daerah ini luar dalam.