Scrabble?! OVERDRIVE

Definitions of OVERDRIVE in various dictionaries:

noun - the state of high or excessive activity or productivity or concentration

noun - a high gear used at high speeds to maintain the driving speed with less output power

verb - drive or work too hard

verb - make use of too often or too extensively

A gearing mechanism of a motor vehicle engine that reduces the power output required to maintain driving speed in a specific range by lowering the gear ratio.

A state of heightened activity or concentration: shifted into overdrive toward the end of the semester.

To drive (a vehicle) too far or too long.

To push (oneself) too far, as in the performance of tasks.