twitch
UK: twɪtʃ | US: twɪtʃ
v. to make a sudden, quick movement (often involuntary)
n. a sudden, quick movement or spasm
v. (informal) to stream live video gameplay or other content online
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The word "twitch" originates from Middle English twicchen, meaning "to pull sharply or pluck," likely imitative of the quick, jerking motion it describes. The "tw-" prefix is associated with sudden movements (seen in words like "twist" or "tweak"), while "-itch" may derive from Old English giccan, reinforcing the idea of rapid motion. Over time, "twitch" evolved to describe both involuntary muscle spasms and, more recently, the rapid, interactive nature of live streaming (e.g., Twitch.tv).
Her eyelid began to twitch from exhaustion.
The rabbit gave a sudden twitch of its ears.
He twitched the curtain aside to peek outside.
Many gamers twitch their gameplay for audiences.
A nervous twitch betrayed his anxiety.