Extremely
Extremely adverb - To a great degree.
Most highly and extremely are semantically related In some cases you can use "Most highly" instead an adverb "Extremely".
Most highly
Extremely and most highly are semantically related in most excellently topic. You can use "Extremely" instead an adverb phrase "Most highly".
Both terms in one sentence
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The episode in which Danny sees what he would become and is extremely horrified is one of the darkest, yet most highly acclaimed episodes of the series.
Source: Future Badass -
Born to an extremely rich family, never lacked for anything, among the most highly connected families of Ankh-Morpork... but an extremely good-hearted, generous woman who opened a (mostly) charity hospital and runs a shelter for sick dragons.
Source: Spoiled Sweet
Cite this Source
Most highly and Extremely. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/extremely/most_highly
Extremely & Most highly. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/extremely/most_highly>.
Most highly or Extremely. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/extremely/most_highly.
Google Ngram Viewer shows how "extremely" and "most highly" have occurred on timeline