We found one dictionary that defines the word make powerless:

Phrases: make ineffective or powerless, more... ▸ Words similar to make powerless ▸ Usage examples for make powerless ▸ Idioms related to make powerless ▸ Wikipedia articles (New!) ▸ Words that often appear near make powerless ▸ Rhymes of make powerless ▸ Invented words related to make powerless