Arch
Mutual synonyms
Both words in one sentence
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Arch-Enemy: Gardener and Nick are Arch Enemies for each other, though both try to deny that the other is anybody important or that hard to defeat.
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He doesn't, but he does explain to her why it's so important to him to win a holodeck baseball game against a Vulcan arch-rival from his academy days.
Source: Percussive Therapy - His speeches and conversations in these films are filled with words like arkhivazhno ("arch-important", of utmost importance) and arkhislozhno ("arch-difficult").
Source: Gratuitous Greek
Cite this Source
Important and Arch. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/arch/important
Arch & Important. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/arch/important>.
Important or Arch. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/arch/important.
Google Ngram Viewer shows how "arch" and "important" have occurred on timeline