judder /judˈər/

1. A strong vibration in an aircraft or other mechanical apparatus
2. An intense, jerking motion
3. In singing, a vibratory effect produced by alternations of greater or less intensity of sound

To shake or vibrate

• scrunch-dried
• scrunch-dries
• scrunch-dry
• scrunch-drying
• scrunched
• scrunches
• scrunchie
• scrunchier
• scrunchies
• scrunchiest
• scrunching
• scrunchy
• scrunt
• scruntier
• scruntiest
• scrunts
• scrunty
• scruple
• scrupled
• scrupler
• scruplers
• scruples
• scruples about
• scrupling
• scrupulosities