Jump out is an idiom that can be used to describe various reactions or actions, such as surprising, standing out, or being noticeable. Synonyms for jump out include catch the eye, stand out, be striking, be noticeable, be conspicuous, surprise, startle, astonish, amaze, and impress. Additional synonyms for jump out are emerge, appear, spring up, burst forth, leap, bound, and hop. In some cases, synonyms for jump out can convey a sense of excitement, enthusiasm, or urgency, such as in the phrases "it jumped out at me", "that idea really jumps out", or "my heart jumped out of my chest".