spasmer znamená v Angličtina

twitch [twitched, twitching, twitches]▼(to perform a twitch; spasm)
verb
[UK: twɪtʃ] [US: ˈtwɪtʃ]

judder▼(to spasm or shake violently)
verb
[UK: ˈdʒʌ.də(r)] [US: ˈdʒʌ.dər]