jittery
UK: ˈdʒɪtəri | US: ˈdʒɪtəri
adj. nervous or unable to relax
adj. characterized by small, rapid movements or vibrations
The word "jittery" derives from the noun "jitter," which emerged in the early 20th century, likely imitative of shaky or restless behavior (e.g., "the jitters"). The suffix "-y" transforms it into an adjective, describing a state of nervousness or physical tremors. The term gained popularity in the 1930s, particularly in contexts like "jitterbug" (a lively dance) and later in electronics ("signal jitter"). The morphemes reflect a vivid progression from describing physical shakiness to metaphorical unease.
She felt jittery before her big presentation.
The caffeine made him unusually jittery.
The rabbit’s jittery movements betrayed its fear.
Old machinery often produces a jittery sound.
His hands grew jittery as the deadline approached.