We found one dictionary that defines the word make ineffective:

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