Fast and Unstable


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Fast adjective – Marked by the ability to withstand stress without structural damage or distortion.
Usage example: as the storm approached, we checked to see that every thing on the outside of the house was fast and locked in position

Unstable is an antonym for fast in fixed topic.
Nearby Words: fasted, fasting
Antonyms for Fast


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Unstable adjective – Not being in or able to maintain a state of balance.
Fast is an antonym for unstable.
Nearby Word: unstably
Antonyms for Unstable
Similar words of fast
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Similar words of unstable
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Things that words describes

character fast character unstable character
time fast time unstable time
characters fast characters unstable characters
boss fast boss unstable boss
Other nouns: weapon, version, women.

Both words in one sentence

  • The emotionally unstable patriarch of the Tendō family, Sōun, has a name that means "Fast Road to Heaven", but which can also be read as "weeping man" — describing him perfectly.
  • Names to Run Away from Really Fast: Hell Mosquito, an assassin/bodyguard for hire, but is so unstable and liable to leave a lot of collateral damage or even killing the client, no one in their right mind would use his service.
    Source: Manga / Trash
Cite this Source
Unstable and Fast. (2016). Retrieved 2021, April 13, from
Fast & Unstable. N.p., 2016. Web. 13 Apr. 2021. <>.
Unstable or Fast. 2016. Accessed April 13, 2021.

Antonyms for fast
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Antonyms for unstable
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Google Ngram Viewer shows how "fast" and "unstable" have occurred on timeline: