IPA: /ˈspæstɪkli/
KK: /ˈspæstɪkli/
In a way that involves sudden, uncontrolled movements or spasms.
The dancer moved spastically, making it hard to follow the rhythm.
Spastically is derived from "spastic" (from Greek "spastikos", meaning drawing or pulling) and the suffix "-ally" (meaning in a manner). The word "spastically" refers to something done in a manner characterized by spasms or involuntary muscle contractions.
Think of 'spastic' meaning 'drawing or pulling' — so when something is done 'spastically', it is done in a way that involves involuntary muscle movements.