(Helen) of troy has a handle on it.
It is a good word in many circumstances.
No definite or exact translation but :
Little Johnny's failing math could give Mom agita.
Your husband's being late for a big family dinner = agita
The boss makes unreasonable work demands = agita
The mechanic says the repairs will be $500 = agita
The policeman can't be talked out of a ticket = agita
A fight with your mother = agita
Trying to explain agita = agita!
{Buuurp! Oh,sorry! but that's better!}
wow