Synonyms for Nerve (same or very similar meaning)
WordNet sense 1 (any bundle of nerve fibers running to various organs and tissues of the body):
nervus
WordNet sense 2 (the courage to carry on):
heart, mettle, spunk
WordNet sense 3 (impudent aggressiveness):
boldness, brass, cheek, face
WordNet sense 4 (get ready for something difficult or unpleasant):
steel
From the ODE community, based on WordNet
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