bolt upright
Suddenly sitting straight
Bolt upright describes a posture that is rigidly straight and vertical, typically achieved suddenly.
People sit or stand bolt upright when startled awake, alarmed, or deliberately showing alertness: She sat bolt upright when she heard the noise.
The bolt suggests the straightness of an arrow or metal rod.
erect
Vertical in position
vertical · ramrod · taut · perpendicular · firm · unbending · poised · aligned · motionless · frozen
startled
Abruptly surprised or alarmed
snapped · jerked · sprang · shot up · sat up · woke · alert · abrupt · instant · reactive
- body positionslying down, flat, standing, sitting, squat
- awakeningdawn, sunrise, wake, rousing, alarm
- uprighterect, vertical, perpendicular, standing, ramrod straight
bolt uprightslouching
Poor postural alignment
slumped · hunched over · sprawled · doubled over · bent over
bolt uprightrelaxed
Free of stress
at ease · slouched · laid-back · passed out · unconscious
bolt, upright, bolts, bolted, bolting, deadbolt, unbolt, uprightness, unbolted