Completely
Completely adverb - To a full extent or degree.
Firstly and completely are semantically related. In some cases you can use "Firstly" instead an adverb "Completely".
Firstly
Firstly adverb - In the beginning.
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Synonyms for Firstly
Completely and firstly are semantically related. Sometimes you can use "Completely" instead an adverb "Firstly".
Nearby Word: first
Mutual synonyms
Both words in one sentence
- Firstly, The Richie Rich/Scooby-Doo Hour, which made the bold move of completely changing the show's premise and in doing so fell flat on its face.
Source: Seasonal Rot / Western Animation - Richard crying "Pah pah, up pah pah, up" when the Diabolus ex Machina has left Snape chained to the floor becomes funny rather than heartrending for three reasons: Firstly, he's completely unharmed.
Source: Narm / Fan Fiction -
While it normally functions well enough, there are two examples of Riki inadvertently setting it off the rails: firstly, he ends up falling for Kurugaya and in doing so causes the world to break down because this was completely unexpected and so unaccounted for in the world's structure.
Source: Off the Rails
Cite this Source
Firstly and Completely. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/completely/firstly
Completely & Firstly. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/completely/firstly>.
Firstly or Completely. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/completely/firstly.
Google Ngram Viewer shows how "completely" and "firstly" have occurred on timeline