prompt

give an incentive for action

This moved me to sacrifice my career

serve as the inciting cause of

She prompted me to call my relatives

according to schedule or without delay; on time

the train is prompt

a cue given to a performer (usually the beginning of the next line to be spoken)

the audience could hear his prompting

(computer science) a symbol that appears on the computer screen to indicate that the computer is ready to receive a command