Important
Important adjective - Having great meaning or lasting effect.
Usage example: the discovery of penicillin was a very important event in the history of medicine
Unknown
Unknown adjective - Not widely known.
Usage example: looking for a relatively unknown singer to record the song
Nearby Words: unknowable, unknowing
Both words in one sentence
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This is probably incredibly interesting and important news, but it's being kept under wraps from both Earth-humanity and metahumanity - by whom, and for what reasons, is currently unknown.
Source: Webcomic / Among The Chosen - It's unknown if they're related, but what we do know is that both are very, very, very important and very, very very insane.
Source: One Steve Limit / Video Games -
As the only known fragment of the moon rock, it becomes important to prove that the unknown rock found in the wreckage of the bombed Courtroom No.
Source: Orphan's Plot Trinket
Cite this Source
Unknown and Important. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/important/unknown
Important & Unknown. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/important/unknown>.
Unknown or Important. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/important/unknown.
Google Ngram Viewer shows how "important" and "unknown" have occurred on timeline