Deadly
Deadly adverb - To a great degree.
Perfectly and deadly are semantically related. in completely topic. In some cases you can use "Perfectly" instead an adverb "Deadly".
Nearby Word: dead
Mutual synonyms
Both words in one sentence
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They spent untold millennia in a perfectly logical standoff with the Daleks, each making absolutely logical responses to the perfectly predicted moves of the other...right up until the Movellans created a disease deadly to the Daleks and inflicted an utterly crushing defeat on them.
Source: Scary Dogmatic Aliens -
WOPR doesn't fail safe, it "fails deadly", and said "fail-deadly" works perfectly.
Source: Film / WarGames - At this point the lord admitted that the meal and drink were perfectly fine and the "antidote" was actually an incurable deadly poison.
Source: Poisoned Chalice Switcheroo
Cite this Source
Perfectly and Deadly. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/deadly/perfectly
Deadly & Perfectly. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/deadly/perfectly>.
Perfectly or Deadly. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/deadly/perfectly.
Google Ngram Viewer shows how "deadly" and "perfectly" have occurred on timeline