the better part of
US /ðə ˈbetər pɑːrt əv/
UK /ðə ˈbetər pɑːrt əv/

1.
la mayor parte de, casi todo
most of something; more than half of something
:
•
He spent the better part of his life working on that project.
Pasó la mayor parte de su vida trabajando en ese proyecto.
•
We waited for the better part of an hour for the bus to arrive.
Esperamos la mayor parte de una hora a que llegara el autobús.