No and Perfectly

No

No adverb - Certainly not.
Usage example: in no uncertain terms we were told to leave

Perfectly is an antonym for no.

Perfectly

Perfectly adverb - Without any flaws or errors.

No is an antonym for perfectly.

Cite this Source
Perfectly and No. (2016). Retrieved 2026, August 09, from https://thesaurus.plus/related/no/perfectly
No & Perfectly. N.p., 2016. Web. 09 Aug. 2026. <https://thesaurus.plus/related/no/perfectly>.
Perfectly or No. 2016. Accessed August 09, 2026. https://thesaurus.plus/related/no/perfectly.
Google Ngram Viewer shows how "no" and "perfectly" have occurred on timeline