( old-fashioned , especially BrE ) used to show that you are sure about the truth of what you have just said :
This is a strange business and no mistake.
( old-fashioned , especially BrE ) used to show that you are sure about the truth of what you have just said :
This is a strange business and no mistake.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005