apprehensive

adj. 恐惧的，担心的

appoint, appointee, appointment, apportion, apportionment, apposite, appositely, appositeness, apposition, appraisal, appraise, appraising, appreciable, appreciably, appreciate, appreciation, appreciative, appreciatively, apprehend, apprehension, apprehensively, apprentice, apprenticeship, apprise, apprize, appro, approach, approach to, approachability, approachable, approbation, appropriate, appropriately, appropriateness, appropriation, approval, approve, approve of, approved school, approving,