Extremely and So

Extremely

Extremely adverb - To a great degree.
Usage example: an extremely hot day

So is a synonym for extremely in all that topic. In some cases you can use "So" instead an adverb "Extremely".

So

So adverb - To a great degree.
Usage example: it's so cold outside

Extremely is a synonym for so in to a degree topic. You can use "Extremely" instead an adverb "So".
Cite this Source
So and Extremely. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/extremely/so
Extremely & So. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/extremely/so>.
So or Extremely. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/extremely/so.
Google Ngram Viewer shows how "extremely" and "so" have occurred on timeline