1 (sometimes with on) to start a journey: We set off to go to the beach.
az: yola çıxmaq
ru: отправляться (в дорогу)
2 to cause to start doing something: She had almost stopped crying, but his harsh words set her off again.
az: həvəsləndirmək
ru: побуждать
3 to explode or ignite: You should let your father set off all the fireworks.
az: partlatmaq, alovlandırmaq
ru: взорвать