1
as in interim
intended to last, continue, or serve for a limited time
will serve as the ad interim CEO until the merger of the two corporations is complete
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2
as in acting
serving in a position for the time being
an ad interim government until the new constitution goes into effect
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Recent Examples of ad interim
Senior Foreign Service, has been serving as the chargé d’affaires ad interim — essentially an acting ambassador when there is no one in the position — to South Korea since January.
—
Kaitlyn Schallhorn, Oc Register, 13 Apr. 2026
Lorenzo de Zavala helped draft the constitution of the Republic of Texas, and his fellow delegates elected him ad interim vice president of the new country.
—USA Today, 28 Sep. 2021
Other members of the U.S. delegation, according to the White House, include Raymond Greene, the Chargé d’Affaires ad interim at the U.S. Embassy in Tokyo, and Marcia Bernicat, senior official for economic growth, energy as well as the environment.
—Melissa Locker, Time, 4 Aug. 2021
The US Embassy in Seoul also lowered flags to honor the shooting victims, Chargé d'Affaires ad interim Rob Rapson said on Twitter.
—Madeline Holcombe, CNN, 19 Mar. 2021
Shawn Morgan will replace him on an ad interim basis for North America.
—Phoebe Wall Howard, Detroit Free Press, 11 June 2020
Kaitlyn Schallhorn, Oc Register, 13 Apr. 2026
Lorenzo de Zavala helped draft the constitution of the Republic of Texas, and his fellow delegates elected him ad interim vice president of the new country.
—USA Today, 28 Sep. 2021
Other members of the U.S. delegation, according to the White House, include Raymond Greene, the Chargé d’Affaires ad interim at the U.S. Embassy in Tokyo, and Marcia Bernicat, senior official for economic growth, energy as well as the environment.
—Melissa Locker, Time, 4 Aug. 2021
The US Embassy in Seoul also lowered flags to honor the shooting victims, Chargé d'Affaires ad interim Rob Rapson said on Twitter.
—Madeline Holcombe, CNN, 19 Mar. 2021
Shawn Morgan will replace him on an ad interim basis for North America.
—Phoebe Wall Howard, Detroit Free Press, 11 June 2020
Recent Examples of Synonyms for ad interim
Adjective
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That paired with Filimoeatu’s ability to fire up his players led to him being hired full time after serving as interim defensive coordinator for two games.—
Aaron Johnson,
Mercury News,
19 Apr. 2026
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The school fired him in early April and appointed an interim principal.—
Cory Turner,
NPR,
19 Apr. 2026
Adjective
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The Olmsted County Sheriff's Office says a temporary shelter has been established for those impacted by the storm at Autumn Ridge Church in Rochester, adding that public safety officials are securing the area and going door-to-door to assess damages.—
Conor Wight,
CBS News,
18 Apr. 2026
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Roza also said the growth in district contracting over the past several years cannot be separated from the flood of temporary federal relief money schools received during the pandemic.—
Teresa Liu,
Daily News,
18 Apr. 2026
Cite this Entry
“Ad interim.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ad%20interim. Accessed 20 Apr. 2026.
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