Deadly
Deadly adverb - To a great degree.
Usage example: I'm deadly serious about making an offer on the house
Frightfully and deadly are semantically related. In some cases you can use "Frightfully" instead an adverb "Deadly".
Nearby Word: dead
Frightfully
Frightfully adverb - To a great degree.
Usage example: that coat is frightfully expensive, so don't spill anything on it
Deadly and frightfully are semantically related. Sometimes you can use "Deadly" instead an adverb "Frightfully".
Both words in one sentence
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Inverted with most of the Deadly Nadders we've seen up to this point, who are frightfully accurate with their tail spines.
Cite this Source
Frightfully and Deadly. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/deadly/frightfully
Deadly & Frightfully. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/deadly/frightfully>.
Frightfully or Deadly. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/deadly/frightfully.
Google Ngram Viewer shows how "deadly" and "frightfully" have occurred on timeline