Completely
Completely adverb - To a full extent or degree.
Sure and completely are semantically related. In some cases you can use "Sure" instead an adverb "Completely".
Sure
Sure adverb - Without any question.
Completely and sure are semantically related. Sometimes you can use "Completely" instead an adverb "Sure".
Nearby Word: surely
Mutual synonyms
Both words in one sentence
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Sure the town is completely destroyed, but the ship and town were full of Xenomorphs, anyway.
Source: It's the Only Way to Be Sure - History Channel used to be two completely separate networks with completely separate programming, thus ads for History Channel on A&E (which is available in Canada straight from the U.S.) always made sure to mention that it was not available in Canada.
Source: Offer Void In Nebraska -
Taught by Experience: Eggman makes sure the Monster of the Week is completely under his control by mechanizing it, instead of failing to control it like in most previous games.
Source: Video Game / Sonic Generations
Cite this Source
Sure and Completely. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/completely/sure
Completely & Sure. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/completely/sure>.
Sure or Completely. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/completely/sure.
Google Ngram Viewer shows how "completely" and "sure" have occurred on timeline