thoroughly
Me gustaría conocer a Tom más a fondo.
I’d like to get to know Tom better.
Lo busqué a fondo cuando llamaste y no lo encontré.
I searched thoroughly when you called and couldn't find it.
— Love Actually (2003)
Él conoce esta ciudad a fondo.
He knows this city inside and out.
Era necesario estudiar el asunto a fondo.
It was necessary to study the matter thoroughly.
Hemos realizado una investigación a fondo.
We have conducted a thorough investigation.
— Vivir (1952)