to top it all
to top it all (off)also to top it off
1. and the worst thing is The washing machine flooded, my car broke down, then to top it all off I locked myself out of the house.
2. and the best thing is Students get to meet the world's top scientists and researchers, and to top it off, the conference is free.Related vocabulary: cap something off
Usage notes: used before you tell the best or worst of one or more related things, as in the examples
to top it all(British, American & Australian) also to top it all off (American & Australian)
if you have been describing bad things which happened, and then say that to top it all something else happened, you mean that the final thing was even worse The washing machine flooded, my car broke down, then to top it all I locked myself out of the house.See at the top of the/ agenda, to cap it all, blow stack, sleep like a log, pay top dollar