bundle of nerves

Noun

 * 1)  A person with an especially nervous, excitable, or fearful disposition.
 * 2)  A lively, continually active person.
 * 1)  A lively, continually active person.
 * 1)  A lively, continually active person.

Synonyms

 * , ; see also Thesaurus:worrier or Thesaurus:coward
 * ; See also Thesaurus:doer