powerless

without power to control or to influence somebody/something ไม่มีอำนาจ, ไม่สามารถ, หมดหนทาง

If he could hide from the police until March, Japanese authorities would be powerless to prosecute him for a murder he had committed in their country 20 years earlier.

"Stateless people are some of the most invisible, neglected and powerless people in the world.''

The company has the right to not pay the workers during the strike and the Labour Department is powerless to make the firm pay.