swingy

adj

1. (informal)Having a swinging motion.

   “the swingy, shooty theatrics of Bionic Commando”

   “Which is not to say that a long rope of pearls is the obvious solution—too long and too swingy and you risk looking like you're on your way to a costume party dressed as a flapper.”

2. (informal)Characteristic of swing music.

   “Fly has a swingy rhythm and some swell guitar work in its instrumental interludes.”

3. (informal)Having many swing voters.

   “[…] redrawing the congressional maps to add at least slightly more Republican votes to the potentially swingy districts of freshmen […]”

   “The more than 2 million ballots that remained uncounted on election night are down to 6,037 votes in Lake County, a small but swingy region north of the San Francisco Bay area.”

4. Allowing stones to curl more than usual.
5. Inconsistent in performance.
6. Variable in mood; liable to having mood swings.