phr verb
Set off is used with these nouns as the subject: ↑ expedition , ↑ procession
Set off is used with these nouns as the object: ↑ alarm , ↑ bomb , ↑ explosion , ↑ explosive , ↑ fire alarm , ↑ firework , ↑ mine , ↑ reaction , ↑ rebellion , ↑ ripple