1. to disturb or make anxious; to trouble or worry
2. to cause a small change in the motion or position of something
Usage: scientific; technical

Examples

• The loud noise perturbs the sleeping baby.
• His strange behavior perturbs his friends.
• The news about the economy perturbs many investors.
• Nothing perturbs her calm demeanor.
• The gravitational pull of Jupiter perturbs the asteroid’s orbit.
• Any external force perturbs the delicate balance of the system.