Efficient and Slack-spined

Opposite meaning words

Efficient adjective - Producing or capable of producing a desired result.

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Slack-spined is an antonym for efficient.

Nearby Words: efficiency, efficiently, efficacy

Definitions of Efficient not found.

Efficient is an antonym for slack-spined in useless topic.

Cite this Source

Slack-spined and Efficient. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/efficient/slack-spined

Efficient & Slack-spined. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/efficient/slack-spined>.

Slack-spined or Efficient. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/efficient/slack-spined.