different between useless vs inefficacious

useless

English

Etymology

From use +? -less.

Pronunciation

  • IPA(key): /?ju?s.l?s/

Adjective

useless (comparative more useless or uselesser, superlative most useless or uselessest)

  1. Without use or possibility to be used.
  2. Unhelpful, not useful; pointless (of an action).
  3. (derogatory, of a person) Good-for-nothing; not dependable.
  4. (colloquial, of a person) Unable to do well at a particular task or thing. Useless is mildly insulting.

Synonyms

  • (good-for-nothing): good-for-nothing
  • (unable to do well): unskillful

Antonyms

  • skillful, useful

Derived terms

  • uselessly
  • uselessness

Translations

useless From the web:

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inefficacious

English

Etymology

in- +? efficacious

Pronunciation

  • Rhymes: -e???s

Adjective

inefficacious (comparative more inefficacious, superlative most inefficacious)

  1. Incapable of having the intended consequence.
  2. Not effective.

Synonyms

  • ineffective

inefficacious From the web:

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  • what does inefficacious
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  • what does efficacious
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