powerless

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

lacking power (Freq. 1)
• Ant:
powerful
• Similar to:
feeble, nerveless, helpless, incapacitated, low-powered, weak
• See Also:
impotent, ineffective, uneffective, ineffectual, weak
• Derivationally related forms:
powerlessness
• Attrubites:
power, powerfulness