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has been puzzling

  • present perfect progressive
    of puzzle (3rd person singular).
    puzzle
    noun
    a toy, problem, or other contrivance designed to amuse by presenting difficulties to be solved by ingenuity or patient effort.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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Asteroid Phaethon, which is five kilometers in diameter, has been puzzling researchers for a long time.

From Science Daily ● Nov. 28, 2023

The story of how black holes, especially young ones, grow so fast and become so massive, has been puzzling astronomers for a long time.

From Space Scoop ● Aug. 3, 2023

The deterioration of Tagovailoa’s connection with his receivers over the past two games has been puzzling.

From Seattle Times ● Dec. 12, 2022

The recent case of Cleveland Browns quarterback DeShaun Watson has been puzzling to many.

From Washington Post ● Oct. 16, 2022

Now I understand why your voice has been puzzling me!

From A Chair on the Boulevard by Leonard Merrick