0 to cause an activity or event, often a series of events, to begin or happen: --
Somebody set the alarm off on my car.
Terrorists set off a bomb in the city centre.
The court's initial verdict in the police officers' trial set off serious riots.
1 to make something look attractive by providing a contrast (= attractive difference) to it: --
The new yellow cushions nicely set off the pale green of the chair covers.
2 to cause an activity or event, often a series of events, to begin or happen: --
The proposed sale has set off an avalanche of protest.
Cheap money set off a boom in personal borrowing, especially against homes.
NYA ORD
European
May 10, 2021
DAGENS ORD
Shimmer
set sth off