revved-up

The term "revved-up" originates from the automotive world of the early 20th century. The core element "rev" is a clipped form of "revolution," referring to a complete turn of an engine's crankshaft. To "rev" an engine means to make it turn faster, increasing its power and noise. The addition of the adverbial particle "up" intensifies this action, implying a state of being raised to a high level of operation. Through metaphorical extension, this mechanical imagery was applied to people and situations, describing a state of heightened excitement, energy, or intensity, as if one's internal engine is operating at high revolutions.

Structure: rev (to increase engine speed) + up (to a higher state) rev: A clipping of the word "revolution" (from Latin revolutio, "a turning around"), used as a verb meaning to increase the speed of an engine. Its functional role is the core action. up: From Old English up, upp, meaning "upward, to a higher position or state." Its functional role is an adverbial particle indicating an increase in intensity or state.