lose (one's) nerve(redirected from lose my nerve)
lose (one's) nerve
To no longer have the courage to do something. I did want to ride the roller coaster earlier, but I'm starting to lose my nerve now that we're actually here.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
lose one's nerve
Become frightened or timid, lose courage. For example, I wanted to ski down the expert slope but then I lost my nerve. This expression employs nerve in the sense of "courage or boldness." [Early 1900s]
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.