1. jump off, get down, begin, get, start out, start, set about, set out, commence
usage: set off quickly, usually with success; "The freshman jumped off to a good start in his math class"
2. jump, leap, jump off, move
usage: jump down from an elevated point; "the parachutist didn't want to jump"; "every year, hundreds of people jump off the Golden Gate bridge"; "the widow leapt into the funeral pyre"