Firmly
Firmly adverb - In a vigorous and forceful manner.
Substantially and firmly are semantically related. in immovably topic. In some cases you can use "Substantially" instead an adverb "Firmly".
Substantially
Substantially adverb - For the most part.
Firmly and substantially are semantically related. Sometimes you can use "Firmly" instead an adverb "Substantially".
Cite this Source
Substantially and Firmly. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/firmly/substantially
Firmly & Substantially. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/firmly/substantially>.
Substantially or Firmly. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/firmly/substantially.
Google Ngram Viewer shows how "firmly" and "substantially" have occurred on timeline