Interim

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mid 16th century (denoting a provisional arrangement, originally for the adjustment of religious differences between the German Protestants and the Roman Catholic Church): from Latin, ‘meanwhile’.

wiktionary

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From Latin interim(“meanwhile”).

etymonline

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interim (n.)

"time intervening," 1560s, from Latin interim (adv.) "in the meantime, meanwhile," originally "in the midst of that," from inter "between" (from PIE *enter "between, among," comparative of root *en "in") + im, ancient adverb from stem of pronoun is "this, that." As an adjective from c. 1600.