used for saying what is the best opinion you can have of sb/sth, or the best thing that can happen, when the situation is bad :
Their response to the proposal was, at best, cool.
We can't arrive before Friday at best.
used for saying what is the best opinion you can have of sb/sth, or the best thing that can happen, when the situation is bad :
Their response to the proposal was, at best, cool.
We can't arrive before Friday at best.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005