This is the 256th most frequent Lithuanian word.
greičiau
"Faster" or "sooner."
Here, 'greičiau' indicates a request for quicker action.
Prašau, atvyk greičiau!
Please, arrive faster!
In this sentence, 'greičiau' is used to compare relative speed and propose the quicker option.
Manau, kad greičiau bus, jei važiuosime per miestą.
I think it will be faster if we go through the city.
Here, 'greičiau' is used in a figurative manner to propose an alternative explanation or emphasis.