Extra
Extra adjective - Being over what is needed.
Unknown
Unknown adjective - Happening or existing without one's knowledge.
Extra and unknown are semantically related. Sometimes you can use "Extra" instead an adjective "Unknown".
Nearby Words: unknowable, unknowing
Both words in one sentence
- Instead of blaming the terrorists, he instead blames Gibbs and the Navy for his son's death and exploits two unknown flaws for extra chaos.
Source: Misplaced Retribution -
It's unknown whether these were meant for some special winposes or extra fanservice.
- If any have a connection to the Bed of Chaos is unknown, but Black Knight weapons don't do extra damage to them like they did to demons in the first game, so it seems unlikely.
Source: Our Demons Are Different
Cite this Source
Unknown and Extra. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/extra/unknown
Extra & Unknown. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/extra/unknown>.
Unknown or Extra. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/extra/unknown.
Google Ngram Viewer shows how "extra" and "unknown" have occurred on timeline