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

juddˈery adjective

• in foal
• in-foal
• infobahn
• infobahns
• in focus
• infographic
• infographics
• infold
• infolded
• infolding
• infoldings
• infolds
• in folio
• infomania
• infomanias
• infomercial
• infomercials
• infopreneurial
• in for
• in for a penny, in for a pound
• in force
• inforce
• in for it
• inform
• informal