Stranger
Stranger noun - Anyone who does not belong in the environment in which they are found.
Unknown is a synonym for stranger in newcomer topic. In some cases you can use "Unknown" instead the word "Stranger" as a noun or an adjective, when it comes to topics like foreigner, person who is unfamiliar. popular alternative
Both words in one sentence
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Stranger Behind the Mask: The killer is Mrs Slater's unknown son Eric who was born mentally unstable and physically deformed.
Source: Film / The House on Sorority Row - However, a stranger case is Iemitsu Sawada, who lacks any special Flame, but is still able to use Flames barehanded for an unknown reason.
Source: Wrong Context Magic -
All-Powerful Bystander: At times, it seems like the Stranger should be able to easily solve any problem he has, but for some unknown reason is prevented from intervening directly.
Cite this Source
Unknown and Stranger. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/stranger/unknown
Stranger & Unknown. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/stranger/unknown>.
Unknown or Stranger. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/stranger/unknown.
Google Ngram Viewer shows how "stranger" and "unknown" have occurred on timeline