Formidable
Formidable adjective - Causing fear.
Sinister and formidable are semantically related in ominous topic. In some cases you can use "Sinister" instead an adjective "Formidable", when it comes to topics like intimidating.
Nearby Word: formidably
Sinister
Sinister adjective - Being or showing a sign of evil or calamity to come.
Formidable and sinister are semantically related in ominous topic. Sometimes you can use "Formidable" instead an adjective "Sinister".
Mutual synonyms
Related pairs
- disturbing and formidable
- disturbing and sinister
- forbidding and formidable
- forbidding and sinister
- terrible and formidable
- terrible and sinister
- frightful and formidable
- frightful and sinister
- horrible and formidable
- horrible and sinister
- shocking and formidable
- shocking and sinister
- wicked and formidable
- wicked and sinister
Both words in one sentence
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And the main reason that his mistreatment by the Dursleys wasn't reported was thanks to the manipulations of Sinister, a formidable psychic in his own right.
Source: Psychic Powers
Cite this Source
Sinister and Formidable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/formidable/sinister
Formidable & Sinister. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/formidable/sinister>.
Sinister or Formidable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/formidable/sinister.
Google Ngram Viewer shows how "formidable" and "sinister" have occurred on timeline