a high gear used at high speeds to maintain the driving speed with less output power
the state of high or excessive activity or productivity or concentration; "Troops are ready to go into overdrive as soon as the signal is given"; "Melissa's brain was in overdrive"
drive or work too hard; "The teacher is overworking his students"; "Overdriving people often suffer stress"
the furthest or highest degree of something; "he carried it to extremes"
most distant in any direction; "the extreme edge of town"
of the greatest possible degree or extent or intensity; "extreme cold"; "extreme caution"; "extreme pleasure"; "utmost contempt"; "to the utmost degree"; "in the uttermost distress"
far beyond a norm in quantity or amount or degree; to an utmost degree; "an extreme example"; "extreme temperatures"; "extreme danger"
beyond a norm in views or actions; "an extreme conservative"; "an extreme liberal"; "extreme views on integration"; "extreme opinions"
a state of extreme (usually irremediable) ruin and misfortune; "lack of funds has resulted in a catastrophe for our school system"; "his policies were a disaster"