Extensively
Relatively
Relatively adverb - To some degree or extent.
Usage example: these newly acquired in-laws felt relatively comfortable at our family reunion
Extensively is an antonym for relatively.
Both words in one sentence
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He was rough and, though his reign was relatively peaceful, was known to train extensively for combat.
Source: Authority Equals Asskicking - His Edo Tensei army was dangerous, but personally he was defeated relatively easily despite extensively modifying his own body and achieving an Evil Counterpart to Naruto's Sage Mode and was mostly forgotten by the story for a few years.
Source: Big Bad Wannabe
Cite this Source
Relatively and Extensively. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/extensively/relatively
Extensively & Relatively. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/extensively/relatively>.
Relatively or Extensively. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/extensively/relatively.
Google Ngram Viewer shows how "extensively" and "relatively" have occurred on timeline