bravado [bravados](a show of defiance or courage) noun [UK: brə.ˈvɑː.dəʊ] [US: brə.ˈvɑːdo.ʊ]True bravery is quite another thing from bravado. = Il vero coraggio è ben altra cosa rispetto a una bravata.
mischief(harm or trouble caused by an agent or brought about by a particular cause) noun [UK: ˈmɪs.tʃɪf] [US: ˈmɪs.tʃəf]