hesitation

hesitation (http://definr.com/hesitation)

     n 1: indecision in speech or action [syn: vacillation, wavering]
     2: a certain degree of unwillingness; "a reluctance to commit
        himself"; "after some hesitation he agreed" [syn: reluctance,
         hesitancy, disinclination, indisposition]
     3: the act of pausing uncertainly; "there was a hesitation in
        his speech" [syn: waver, falter, faltering]