sum up | ˌsum sth ↔ ˈup
1.
to state the main points of sth in a short and clear form
SYN summarize :
To sum up , there are three main ways of tackling the problem ...
[+ wh- ]
Can I just sum up what we've agreed so far?
2.
( of a judge ) to give a summary of the main facts and arguments in a legal case, near the end of a trial
—related noun summing-up