Meaning of the word "harp on" in English

What does "harp on" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

harp on

US /hɑːrp ɑːn/
UK /hɑːrp ɑːn/
"harp on" picture

Phrasal Verb

1.

to talk or write persistently and tediously on a particular subject

Example:
He keeps harping on about the good old days.
I wish she wouldn't harp on my mistakes.
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