startle

(noun, verb)

noun

1. a sudden involuntary movement

- he awoke with a start

Similar word(s): jump, start

Definition categories: act, reflex

verb

1. to stimulate to action

- the loud noise startled him awake

Similar word(s): galvanise, galvanize

Definition categories: emotion, floor, shock

2. move or jump suddenly, as if in surprise or alarm

- She startled when I walked into the room

Similar word(s): jump, start

Definition categories: motion, move

Sentences with startle as a verb:

- a horse that startles easily