Inefficient and Streamlined

Opposite meaning words

Inefficient adjective - Not producing desired results; wasteful.

Usage example: an inefficient campaign against drugs

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Streamlined is an antonym for inefficient.

Streamlined adjective - Made efficient by stripping off nonessentials.

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Inefficient is an antonym for streamlined in topics: sleek, modernized.

Cite this Source

Streamlined and Inefficient. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/inefficient/streamlined

Inefficient & Streamlined. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/inefficient/streamlined>.

Streamlined or Inefficient. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/inefficient/streamlined.

Google Ngram Viewer shows how "inefficient" and "streamlined" have occurred on timeline