Ad interim and Timeless

Opposite meaning terms

Ad interim adjective - Intended to last, continue, or serve for a limited time.

Usage example: will serve as the ad interim CEO until the merger of the two corporations is complete

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Timeless is an antonym for ad interim.

Timeless adjective - Having an existence or validity that does not change or diminish.

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Ad interim is an antonym for timeless.

Cite this Source

Timeless and Ad interim. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/ad_interim/timeless

Ad interim & Timeless. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/ad_interim/timeless>.

Timeless or Ad interim. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/ad_interim/timeless.

Google Ngram Viewer shows how "ad interim" and "timeless" have occurred on timeline