The term 'difficult to control' can be described by the crossword solutions UPPITY (6 letters), REFRACTORY (10 letters), FRACTIOUS (9 letters), UNRULY (6 letters), UNMANAGEABLE (12 letters), and SKITTISH (8 letters). UPPITY refers to someone who is arrogant or haughty, while REFRACTORY implies stubbornness or resistance to authority. FRACTIOUS suggests a person who is easily irritated or quarrelsome, and UNRULY implies someone who is disobedient or disorderly. UNMANAGEABLE means that someone is difficult to control or handle, and SKITTISH implies someone who is nervous or jumpy. All of these words describe someone who is difficult to control in some way.