different between efficacious vs strenuous

English

Etymology

From Old French efficacieux, from Latin effic?x (“efficacious”) +? -ous, from efficere (“to effect, to accomplish”); see effect.

Pronunciation

• IPA^(key): /?f.?.?ke?.??s/

  Rhymes: -e???s

Adjective

efficacious (comparative more efficacious, superlative most efficacious)

1. (formal) Effective; possessing efficacy. [from 1520s]

   Synonym: effective

   Antonym: inefficacious

Related terms

Translations

Further reading

• efficacious in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• efficacious in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
• “efficacious”, in Lexico, Dictionary.com; Oxford University Press, 2019–present.

English

Etymology

From Latin strenuus (“quick”).

Pronunciation

• IPA^(key): /?st??nju?s/
• Hyphenation: stren?u?ous

Adjective

strenuous (comparative more strenuous, superlative most strenuous)

1. Having great vigour or energy; forceful.

   Synonyms: ardent, earnest, eager, energetic, determined, resolute, vigorous, zealous

2. (of a task) Requiring great exertion; very laborious
   • 1961: J. A. Philip. Mimesis in the Sophistês of Plato. In: Proceedings and Transactions of the American Philological Association 92. p. 467.

     We can achieve this god?likeness only by unremitting and strenuous effort of the intellect.

Derived terms

Related terms

• strenuity
• strenuosity

Translations

Further reading

• strenuous in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• strenuous in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
• strenuous at OneLook Dictionary Search