Completely
Completely adverb - To a full extent or degree.
Really and completely are semantically related. In some cases you can use "Really" instead an adverb "Completely".
Really
Really adverb - To a great degree.
Usage example: really tired after staying up all night
Completely and really are semantically related. Sometimes you can use "Completely" instead an adverb "Really".
Mutual synonyms
Both words in one sentence
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A Shadowrun book set in Germany has at one point two people who appears to wear Painted-On Pants (or rather, full-bodysuits), but really were completely tattooed.
Source: Body Paint - The problem is, she just wants a genuine sibling relationship between them, and is completely oblivious to his attraction (until it gets really, really Anvilicious).
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And then she comes back around to saying she really, really likes Toru, which he ignores the significance of completely.
Source: Manga / Iris Zero
Cite this Source
Really and Completely. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/completely/really
Completely & Really. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/completely/really>.
Really or Completely. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/completely/really.
Google Ngram Viewer shows how "completely" and "really" have occurred on timeline