The crossword solution for the term 'fail under pressure' is 'CHOKE'. Choking is a phenomenon that occurs when an individual is unable to perform a task or activity due to intense pressure or anxiety. It is often seen in sports, where athletes may be unable to perform their best due to the pressure of the situation. Choking can also occur in other areas of life, such as during a job interview or a test. In these cases, the individual may be unable to think clearly or recall information due to the pressure of the situation.