harp on
US /hɑːrp ɑːn/
UK /hɑːrp ɑːn/

1.
bercakap berulang kali, mengungkit
to talk or write persistently and tediously on a particular subject
:
•
He keeps harping on about the good old days.
Dia terus-menerus bercakap tentang zaman dahulu yang indah.
•
I wish she wouldn't harp on my mistakes.
Saya harap dia tidak akan mengungkit kesilapan saya.