This is the 37th most frequent Malay word.
sudah
Already.
Here, 'sudah' is used to indicate that the action of having lunch has been completed.
Saya sudah makan tengah hari.
I have already had lunch.
In this sentence, 'sudah' denotes the completion of the action, emphasizing it occurred earlier.
Dia sudah pergi ke pasar pagi tadi.
He/She has already gone to the market earlier this morning.
In this context, 'sudah' conveys that the project was finished prior to a specific point in time.