( informal ) used to show that you do not know the answer to a question :
'How much is all this going to cost?' 'Good question!'
( informal ) used to show that you do not know the answer to a question :
'How much is all this going to cost?' 'Good question!'
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005