Inefficient
Inefficient adjective - Not producing the desired result.
Usage example: inefficient measures to solve the problem of teenage smoking
Useless is a synonym for inefficient in affect topic. In some cases you can use "Useless" instead an adjective "Inefficient", when it comes to topics like lousy. informal substitute
Nearby Words: inefficiency, inefficiently
Useless
Useless adjective - Not capable of being put to use or account.
Inefficient is a synonym for useless in affect topic. You can use "Inefficient" instead an adjective "Useless".
Mutual synonyms
Related pairs
- inexpert and inefficient
- inexpert and useless
- inept and inefficient
- inept and useless
- incompetent and inefficient
- incompetent and useless
- inadequate and inefficient
- inadequate and useless
- weak and inefficient
- weak and useless
- worthless and inefficient
- worthless and useless
- idle and inefficient
- idle and useless
Both words in one sentence
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It grants major strength, but at the cost of mobility, making the form useless, not to mention that it is very inefficient at energy consumption and quickly wears out the user.
Source: Square/Cube Law -
Wells designed his Martians by starting out with a humanoid, then eliminating all organs (limbs, digestive tract, etc) that he felt advanced technology would render useless and/or inefficient.
Source: Starfish Aliens -
Hence why anybody can get away with useless, inefficient and silly laws if the legislators have the weapons.
Source: Appeal to Force
Cite this Source
Useless and Inefficient. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/inefficient/useless
Inefficient & Useless. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/inefficient/useless>.
Useless or Inefficient. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/inefficient/useless.
Google Ngram Viewer shows how "inefficient" and "useless" have occurred on timeline