root word: kulit

importunate, pesky

makulit: persistent to the point of annoyance

makulit : used to describe someone who nags in a childish way

makulit na bata
a child who keeps bothering you with the same thing over and over again

makukulit na bata
pesky kids

Makulit ka.
You’re a childish nag.

If someone keeps asking you for something, even though you’ve already said no, then you can tell the person:

Makulit ka talaga!
You’re really such a pain in the ass.

Makukulit ang mga bata.
The kids are so pesky.

Nakakainis ang kakulitan nila.
Their nagging is so irritating.

The Tagalog word makulit is often used in a light-hearted context to describe someone who is annoying in being repetitive, stubborn, or persistent in their asking questions or asking for a favor.

Kinulit nila ako hanggang sa umoo ako.
They just kept nagging me until I said yes.