jumping /ˈd͡ʒʌm.pɪŋ/adjective 1noun 1forms 3phrases 2 adjective1 •(informal) Exuberantly active; in full swing.When the party was nice, the party was jumpin' (Hey, Yippie, Yi, Yo) And everybody havin' a ball (Hah, ho, Yippie Yi Yo) — 1998 noun1 •The act of performing a jump.When the tuning-fork is brought over a resonant jar or bottle, the beats may be heard and the jumpings seen by a thousand people at once. — 1871 formsjumpings · more jumping · most jumping Phrases with jumping gun jumpingThe act or practice of soliciting orders for a new issue of a security before it has been registered with the SEC, or before its registration has been approved. shark-jumpingBecoming unbelievable or disappointing due to plot developments.