prompt

definition: 
give an incentive for action
sentence: 
Scientists continually reassess whether a contagious disease is enough of a threat to prompt a national vaccination campaign.
Her emotional plea prompted the director to give her a second chance.
difficulty: 
very easy
toefl frequency: 
2
toefl classification: 
adverb: 
promptly
adjective: 
adverb sentence: 
adjective sentence: 
verb: 
prompt
verb sentence: 
noun: 
promptness
noun sentence: