twitch

1 twitch /ˈtwɪtʃ/ verb
twitches; twitched; twitching
1 twitch
/ˈtwɪtʃ/
verb
twitches; twitched; twitching
Britannica Dictionary definition of TWITCH
1 
[no object] : to make a slight, sudden movement that is not controlled or deliberate
2 
[+ object] : to move or pull (something) with a sudden motion
2 twitch /ˈtwɪtʃ/ noun
plural twitches
2 twitch
/ˈtwɪtʃ/
noun
plural twitches
Britannica Dictionary definition of TWITCH
[count]
1 
: a slight, sudden movement of a muscle or body part that you do not control
2 
: a sudden and quick movement or change

— twitchy

/ˈtwɪtʃi/ adjective twitchier; twitchiest [also more twitchy; most twitchy]