This is the 559th most frequent Hungarian word.
mondták
"Mondták" means "they said."
In this sentence, 'mondták' functions as the past tense verb, connected with the implied subject 'they' referring to an unspecified group.
Mondták, hogy a mező gyönyörű naplementekor.
They said that the field is beautiful at sunset.
Here, 'mondták' conveys a statement reported from a collective source ('the news'), implying an anonymous group as the speaker.
A hírekben mondták, hogy esni fog.
In the news, they said it would rain.
The word 'mondták' is the third person plural past tense of 'mond' meaning 'said'. Here, it indicates that 'the friends' as plural are the subjects.