apprehensive
 oxford
 views  updated May 21 2018ap·pre·hen·sive  / ˌapriˈhensiv/ •
adj. 1. anxious or fearful that something bad or unpleasant will happen.2. archaic  or  poetic/lit.  of or relating to perception or understanding.DERIVATIVES: ap·pre·hen·sive·ly adv.ap·pre·hen·sive·ness n.
 The Oxford Pocket Dictionary of Current English