Definition of a bag or bundle of nerves in English:

a bag (or bundle) of nerves

informal Someone who is extremely anxious or tense: when her relationship started getting serious, she became a bag of nerves
More example sentences
  • I think it's odd how a succession of good, competent defenders have turned into bags of nerves who make mistakes within a month of playing next to Bramble.
  • The character on bass, who I believe is Eric Melvin from NOFX, makes a fine MC, nicely managing the exits and entrances of various drunkards, narcissists, and bags of nerves.
See parent entry: nerve

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Word of the day apposite
Pronunciation: ˈapəzɪt
adjective
apt in the circumstances or relation to something