Definition from Wiktionary, the free dictionary
- Lacking sufficient power or strength.
- You are powerless to stop me
1914, James Joyce, Portrait of the Artist as a Young Man:
- It is said that his right arm had grown powerless from having been raised so often over the heads of those whom he baptized.
- Lacking legal authority.
- The traffic warden was powerless to stop me driving away.
lacking sufficient power or strength