Effective
Effective adjective - Producing or capable of producing a desired result.
Formidable and effective are semantically related. In some cases you can use "Formidable" instead an adjective "Effective".
Formidable
Formidable adjective - Causing fear.
Effective and formidable are semantically related. Sometimes you can use "Effective" instead an adjective "Formidable".
Nearby Word: formidably
Both words in one sentence
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However with their incredibly agile skills, they're pretty formidable and effective crime fighters.
Source: Western Animation / The Batman -
In Kino's Journey Kino is a formidable quick draw, often seen practicing it and later putting it to use with very effective results.
Source: The Gunslinger -
Nectaris has the Seeker AAG-4, a sort of light tank designed to be more effective against aircraft than against ground units, the Hawkeye M-107, a dedicated anti-aircraft artillery unit with formidable power and range, and the Falcon FX-1, a plane that can only attack other planes.
Source: Anti-Air
Cite this Source
Formidable and Effective. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/effective/formidable
Effective & Formidable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/effective/formidable>.
Formidable or Effective. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/effective/formidable.
Google Ngram Viewer shows how "effective" and "formidable" have occurred on timeline