thoroughly
Y usted conocía bastante a fondo el expediente de Oppenheimer.
And you were quite thoroughly familiar with Oppenheimer's file.
— Oppenheimer (2023)
We studied it thoroughly.
Bueno, investigué a fondo en la Internet.
Well, I did a thorough search on the Internet.
— Do Not Enter (2026)
Me gustaría conocer a Tom más a fondo.
I’d like to get to know Tom better.
La policía registró el local a fondo.
The police thoroughly searched the premises.
John investigó el accidente a fondo.
John investigated the accident thoroughly.
Lo busqué a fondo cuando llamaste y no lo encontré.
I searched thoroughly when you called and couldn't find it.
— Love Actually (2003)
Una investigación a fondo está ahora en marcha.
A thorough investigation is now underway.