Permanent
Unpredictable
Unpredictable adjective - Likely to change frequently, suddenly, or unexpectedly.
Usage example: unpredictable spring weather that makes it really hard to know what to wear
Permanent is an antonym for unpredictable.
Nearby Word: unpredictability
Both words in one sentence
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Such utterly unpredictable elements include: a cop Light didn't know prior to the Memory Gambit missing when he shot at the temporary owner of the Death Note and Light killing Higuchi while holding the Death Note, so that he could reclaim ownership of it and make the memory restoration permanent.
Source: Gambit Roulette
Cite this Source
Unpredictable and Permanent. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/permanent/unpredictable
Permanent & Unpredictable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/permanent/unpredictable>.
Unpredictable or Permanent. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/permanent/unpredictable.
Google Ngram Viewer shows how "permanent" and "unpredictable" have occurred on timeline