jump off

(verb) set off quickly, usually with success. Synonyms: jump off. Example: "The freshman jumped off to a good start in his math class."

(verb) jump down from an elevated point. Synonyms: jump, leap, jump off. Examples: "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."