nerves

(noun) an uneasy psychological state. Synonyms: nervousness. Example: "He suffered an attack of nerves."

(noun) control of your emotions. Example: "This kind of tension is not good for my nerves."

(noun) any bundle of nerve fibers running to various organs and tissues of the body. Synonyms: nerve, nervus.

(noun) the courage to carry on. Synonyms: heart, mettle, nerve, spunk. Examples: "He kept fighting on pure spunk." "You haven't got the heart for baseball."

(noun) impudent aggressiveness. Synonyms: boldness, nerve, brass, face, cheek. Examples: "I couldn't believe her boldness." "He had the effrontery to question my honesty."

(verb) get ready for something difficult or unpleasant. Synonyms: steel, nerve.