1. in a manner characterized by sudden, involuntary muscle contractions or jerky movements
Usage: medical
2. in an uncontrolled, erratic, or clumsy manner
Usage: informal

Examples

• His arm moved spastically after the injury.
• The patient’s muscles contracted spastically during the episode.
• She danced spastically to the fast-paced music.
• The robot’s movements were spastically jerky due to a malfunction.
• He gestured spastically while trying to explain the complex idea.
• The car moved spastically through the parking lot as the new driver practiced.