one by one

idiom

: separately in a series : one at a time : first one and then another one, etc.
I solved the problems one by one.
The performers took the stage one by one.

Examples of one by one in a Sentence

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Yugoslavia's six republics began to pull away one by one, beginning with Slovenia in 1991. Cybele Mayes-Osterman, USA TODAY, 25 Mar. 2025 Once safely on board, the side hatch was opened and the astronauts were helped out, one by one. Marcia Dunn, Chicago Tribune, 18 Mar. 2025 Once safely on board, the side hatch was opened and the astronauts were helped out one by one. Marcia Dunn, Los Angeles Times, 18 Mar. 2025 Pilato stowed the lights in a storage facility in Sunnyside, then spent the next few days testing them, one by one, in a parking lot, plugging them into a power inverter connected to his Honda Civic. Diego Lasarte, The New Yorker, 17 Mar. 2025 See All Example Sentences for one by one

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“One by one.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/one%20by%20one. Accessed 4 Apr. 2025.

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