Ineffective
Operating
Operating adjective - Being in effective operation.
Usage example: the only operating nuclear power plant in the state
Ineffective is an antonym for operating.
Both words in one sentence
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Of course, they were secretly infiltrating us to set us up for conquest all along (the weapons technology they gave us is ineffective against their REAL weapons) and this appears to be standard operating procedure for them.
Source: Alien Among Us
Cite this Source
Operating and Ineffective. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/ineffective/operating
Ineffective & Operating. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/ineffective/operating>.
Operating or Ineffective. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/ineffective/operating.
Google Ngram Viewer shows how "ineffective" and "operating" have occurred on timeline