Alien
Alien adjective - Being, relating to, or characteristic of a country other than one's own.
Unexplained and alien are semantically related In some cases you can use "Unexplained" instead an adjective "Alien".
Unexplained
Unexplained adjective - Not explained.
Alien and unexplained are semantically related in obscure topic. Sometimes you can use "Alien" instead an adjective "Unexplained".
Mutual synonyms
Both words in one sentence
- How he re-created parts of the Universe he had never seen or heard of and how an alien whose power is to be omnipotent can make mistakes in rebuilding the Universe is left unexplained.
Source: Voodoo Shark -
Most of the dialogue and some scenes were cut, which made several events such as Bahamut turning into an alien monster completely unexplained.
Source: Video Game / Contra -
Australian comedy series Full Frontal did a skit where the host of an 'unexplained mysteries' series kept confusing ordinary household events for ghosts or alien conspiracies.
Source: Give Me a Sign
Cite this Source
Unexplained and Alien. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/alien/unexplained
Alien & Unexplained. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/alien/unexplained>.
Unexplained or Alien. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/alien/unexplained.
Google Ngram Viewer shows how "alien" and "unexplained" have occurred on timeline