Synonyms of ad interim

ad interim

adjective

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

Synonyms & Similar Words

• interim
• temporary
• provisional
• transitional
• short-term
• alternate
• acting
• proxy
• provisory
• provisionary
• makeshift
• impermanent
• intermediate
• substitute
• expedient
• conditional
• transitory
• fleeting
• intermediary
• limited
• tentative
• qualified
• ephemeral
• improvised
• short-range
• terminate
• fugitive
• contingent
• short-lived
• terminable
• replaceable

Antonyms & Near Antonyms

• permanent
• final
• long-term
• fixed
• settled
• set
• unlimited
• unconditional
• standing
• long-range
• lasting
• extended
• unqualified
• eternal
• everlasting
• endless
• immortal
• perpetual
• unending
• timeless
• enduring
• undying
• deathless
• dateless

2

as in acting

serving in a position for the time being

an ad interim government until the new constitution goes into effect

Synonyms & Similar Words

• interim
• acting
• temporary
• provisional
• proxy
• backup
• makeshift
• alternate
• provisory
• provisionary
• substitute
• make-do
• stopgap
• jackleg

Antonyms & Near Antonyms

• permanent
• long-term

Example Sentences

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, 20 May 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

This led the opposition to rally around the president of Venezuela's Parliament, a young lawmaker named Juan Guaidó, who -- according the constitution -- must rule ad interim should the presidency be vacant. — Stefano Pozzebon, CNN, 7 Dec. 2020

Shawn Morgan will replace him on an ad interim basis for North America. — Phoebe Wall Howard, Detroit Free Press, 11 June 2020