Roughly
Roughly adverb - Close to but not exactly.
Smoothly
Smoothly adverb - Without difficulty.
Both words in one sentence
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In Mandarin Chinese, 666 sounds like the phrase that roughly translates as "everything going smoothly", so the number is considered lucky in China especially for commercial undertakings.
Source: Number of the Beast
Cite this Source
Smoothly and Roughly. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/roughly/smoothly
Roughly & Smoothly. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/roughly/smoothly>.
Smoothly or Roughly. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/roughly/smoothly.
Google Ngram Viewer shows how "roughly" and "smoothly" have occurred on timeline