(colloquial) Nervous; worried.

That has increased; heightened

That increases in stages. / (of a transformer etc) That increases a voltage.

(exercise) A workout movement wherein one leg stands on an elevated surface and lifts in the concentric part the rest of the body up onto it to target – depending on angle and starting distance of the other leg and weights applied by the arms – the femoral and gluteal muscles variously.

(Britain) warmed-over

simple past tense and past participle of pucker up

A sudden outbreak, outburst or eruption (originally of flame, but now used more generally of any violent activity or emotion). / A sudden intensification in activity.

Third-person singular simple present indicative form of turn up

present participle of turn up

simple past tense and past participle of turn up