annoyance [ɐnˈɔɪəns] n

bother [bˈɒðə] n

harassment [həɹˈasmənt] n

molestation [məlɪstˈeɪʃən] n

persecution [pˌɜːsɪkjˈuːʃən] n

vexation [vɛksˈeɪʃən] n