The term 'Wild Child' is often used to describe a child who is unruly, disobedient, and difficult to control. The crossword solutions for this term are IMP (3 letters), BRAT (4 letters), and TERROR (6 letters). IMP stands for 'IMPUDENT, ' which means someone who is rude and disrespectful. BRAT is a slang term for a mischievous child who behaves badly. TERROR is a word that describes someone who causes fear or dread. All three words can be used to describe a wild child.