Oomph

[Luis Fok]

An extra push. An ingredient or a factor that will make something better or perfect. 2. ability to jump or move in great heights.
a sound of such a sound (jumping or pushing), or sound of landing of such a act of jumping or pushing.

[Vania]

extra effort, strength, muscle, or drive.

[Kit]

the sound you make when you get hit hard in the belly

[Sommer]

sexy

[Monty]

The quality of being exciting, energetic, or sexually attractive.

[Magaret]

power, strength, or energetic activity: