apprehensive /ˌæprɪˈhɛnsɪv/ adjective Learner's definition of APPREHENSIVE
[more apprehensive; most apprehensive]
: afraid that something bad or unpleasant is going to happen : feeling or showing fear or apprehension about the future担心的；忧虑的：恐惧的 -
He was quite apprehensive [=fearful, uneasy] about the surgery.他相当害怕做手术。
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She gave me an apprehensive [=anxious] look.她面带焦虑地看了我一眼。
— apprehensiveness
noun [noncount]