We don't have synonyms for jump jet yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are jump out, jump seat and jump at.
(n) :
(informal, military) A jet airplane with fixed wings that is capable of vertical takeoff and landing as well as hovering, and, in some cases, also capable of becoming airborne in a conventional manner by gaining airspeed on a runaway.
(n) :
(informal, military) A jet airplane with fixed wings that is capable of vertical takeoff and landing as well as hovering, and, in some cases, also capable of becoming airborne in a conventional manner by gaining airspeed on a runaway.