Firstly
Firstly adverb - In the beginning.
Show all Definitions
Synonyms for Firstly
Thoroughly and firstly are semantically related. In some cases you can use "Thoroughly" instead an adverb "Firstly".
Nearby Word: first
Thoroughly
Thoroughly adverb - With attention to all aspects or details.
Firstly and thoroughly are semantically related. Sometimes you can use "Firstly" instead an adverb "Thoroughly".
Nearby Words: thorough, thoroughness
Mutual synonyms
Cite this Source
Thoroughly and Firstly. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/firstly/thoroughly
Firstly & Thoroughly. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/firstly/thoroughly>.
Thoroughly or Firstly. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/firstly/thoroughly.
Google Ngram Viewer shows how "firstly" and "thoroughly" have occurred on timeline