If you or your nerves are on edge, you are tense, nervous, and unable to relax.

For example:

The events of the past few days had left Mrs. Smith tense,

her nerves on edge.

My nerves were constantly on edge whenever our boss arrived.

Our nerves were on edge as we waited for the surgeon’s report.

With everything that had been happening lately, I was on edge.

Never had she felt so on edge before an interview.

Tradução:

A expressão idiomática “on edge” significa estar com os nervos “à flor da pele”, ou seja, nervoso, tenso e impaciente.