Formalize and Illegalize
Opposite meaning words
Formalize
Formalize verb - To give official acceptance of as satisfactory.
Usage example: the plan has yet to be formalized by the city council
Illegalize is an antonym for formalize.
Illegalize
Cite this Source
Illegalize and Formalize. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/formalize/illegalize
Formalize & Illegalize. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/formalize/illegalize>.
Illegalize or Formalize. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/formalize/illegalize.
Google Ngram Viewer shows how "formalize" and "illegalize" have occurred on timeline