twitchy
adjectiveUK /ˈtwɪtʃi/
US /ˈtwɪtʃi/
Making small, quick movements you cannot control.
The rabbit's nose was twitchy as it sniffed the grass.
OTHER MEANINGS
2. Feeling nervous or anxious.
He gets twitchy before every exam.
3. Moving in sudden, short jerks.
The twitchy robot arm kept dropping the parts.
4. Easily annoyed or irritable.
She was twitchy after a sleepless night.