underpowered 

Used in the gaming community. Describes something that is too weak.

"That item was so overpowered until they nerfed it. Now it's underpowered .

underpowered by TheRealSmileyFaker October 11, 2016

unempowered 

1). The state of being unempowered. 2). Lacking empowerment.

Not having the authority to sign the contract, we were feeling unempowered.

unempowered by E. duq Nukem January 24, 2006