Lose one's nerve is a phrase used to describe a situation in which someone becomes too scared or anxious to do something. The crossword solutions for this phrase are BLINK (5 letters), PANIC (5 letters), and chickenout (10 letters). BLINK is an involuntary action in which the eyelids close quickly, often due to surprise or fear. PANIC is a sudden feeling of intense fear or anxiety that can cause physical symptoms such as trembling and sweating. Chickenout is a slang term used to describe someone who backs out of a situation due to fear or anxiety.