different between formidable vs efficacious

English

Etymology

Borrowed from Middle French formidable, from Latin form?d?bilis (“formidable, terrible”), from form?d? (“fear, dread”).

Pronunciation

• (US) IPA^(key): /?f???m?d?b?l/, IPA^(key): /f????m?d?b?l/
• (UK) IPA^(key): /f???m?d?b?l/, /f??m?d?b?l/

Adjective

formidable (comparative more formidable, superlative most formidable)

1. Causing fear, dread, awe, or discouragement as a result of size, strength, or some other impressive feature; commanding respect; causing wonder or astonishment.
2. Difficult to defeat or overcome.

Translations

Catalan

Etymology

From Latin form?d?bilis.

Pronunciation

• (Balearic) IPA^(key): /fo?.mi?da.bl?/
• (Central) IPA^(key): /fur.mi?da.bl?/
• (Valencian) IPA^(key): /fo?.mi?da.ble/

Adjective

formidable (masculine and feminine plural formidables)

1. formidable

Derived terms

• formidablement

Further reading

• “formidable” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.
• “formidable” in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana.
• “formidable” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
• “formidable” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.

French

Etymology

Borrowed from Latin form?d?bilis (“formidable, terrible”), from form?d? (“fear, dread”).

Pronunciation

• IPA^(key): /f??.mi.dabl/

Adjective

formidable (plural formidables)

1. (dated or literary) fearsome
2. fantastic, tremendous

Further reading

• “formidable” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

Norwegian Bokmål

Adjective

formidable

1. definite singular of formidabel
2. plural of formidabel

Norwegian Nynorsk

Adjective

formidable

1. definite singular of formidabel
2. plural of formidabel

Occitan

Etymology

From Latin form?d?bilis.

Adjective

formidable m (feminine singular formidabla, masculine plural formidables, feminine plural formidablas)

1. formidable

Spanish

Etymology

Borrowed from Latin formidabilis.

Adjective

formidable (plural formidables)

1. great, fantastic, tremendous
2. formidable

Derived terms

• formidablemente

Further reading

• “formidable” in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014.

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.