apprehensive
definition
anxious or fearful that something bad or unpleasant will happen
example
She felt apprehensive about the results of her medical tests, fearing the worst could happen.
synonyms
anxiousworriednervous
word origin — from Latin 'apprehensivus,' meaning 'capable of apprehending, fearful,' from 'apprehendere' meaning 'to seize, grasp.'