powerless adj.
VERBS appear, be, feel, seem | become | remain | render sb If he took control, they would be rendered virtually powerless.
ADV. completely, quite, totally, utterly | comparatively, relatively, virtually
PREP. against They were completely powerless against such a large group. | in the face of They felt powerless in the face of disaster.
You can also check other dicts: powerless (English, 中文解释 ), wordnet sense, Collins Definition