Extremely useful
Key and extremely useful are semantically related. In some cases you can use "Key" instead an adjective phrase "Extremely useful".
Key
Key adjective - Coming before all others in importance.
Extremely useful and key are semantically related. You can use "Extremely useful" instead an adjective "Key".
Mutual synonyms
Both terms in one sentence
- This can be extremely useful in competitive play, as it allows a badly injured Mon nearing the end of its usefulness to quickly and efficiently take down a key opponent.
Source: Death-Activated Superpower -
In the original, aside from situations where you're forced to use it, the Key Sword's narrow hitbox can be extremely useful in some of the Endless Corridor pot-smashing puzzles, since any other weapon risks accidentally smashing the wrong pots and forcing you to start over.
Source: Video Game / La-Mulana
Cite this Source
Key and Extremely useful. (2017). Retrieved 2026, August 08, from https://thesaurus.plus/related/extremely_useful/key
Extremely useful & Key. N.p., 2017. Web. 08 Aug. 2026. <https://thesaurus.plus/related/extremely_useful/key>.
Key or Extremely useful. 2017. Accessed August 08, 2026. https://thesaurus.plus/related/extremely_useful/key.
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