as in researcher
one who observes or studies by close examination and systematic inquiry
a psychology experimenter doing research into the sources of panic attacks
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Recent Examples of experimenter
Then, an experimenter presented the bonobo with two empty, transparent cups and pretended to pour juice from an empty pitcher into each cup.
—
Amarachi Orie, CNN Money, 9 Feb. 2026
Anthropic’s experimenters were not thrilled.
—Gideon Lewis-Kraus, New Yorker, 9 Feb. 2026
The team hypothesizes that the bats anchored themselves to landmarks in their environment, such as the coastline, the experimenters’ tents, and their perches.
—Yasemin Saplakoglu, Quanta Magazine, 21 Jan. 2026
Horses that smelled the fear samples touched the experimenter less than those in a control group or those that smelled joyful sweat samples.
—Marta Hill, Scientific American, 14 Jan. 2026
Bacharach and other pop greats were rescued later by experimenters like Elvis Costello and White Stripes.
—Michael Barnes, Austin American Statesman, 8 Jan. 2026
If the experimenter reads the information about which slit the photon passed through, there will never be an interference pattern.
—Paul Sutter, Space.com, 20 Dec. 2025
But finding lightning has proven more elusive on our closest planetary neighbors — even though experimenters in the 1970s did lab work that suggested lightning should exist on Mars.
—Nell Greenfieldboyce, NPR, 26 Nov. 2025
An experimenter screens individuals from a population for a trait of interest, and only those that meet a certain threshold are allowed to reproduce to create the next generation.
—Shraddha Lall, The Conversation, 16 Oct. 2025
Amarachi Orie, CNN Money, 9 Feb. 2026
Anthropic’s experimenters were not thrilled.
—Gideon Lewis-Kraus, New Yorker, 9 Feb. 2026
The team hypothesizes that the bats anchored themselves to landmarks in their environment, such as the coastline, the experimenters’ tents, and their perches.
—Yasemin Saplakoglu, Quanta Magazine, 21 Jan. 2026
Horses that smelled the fear samples touched the experimenter less than those in a control group or those that smelled joyful sweat samples.
—Marta Hill, Scientific American, 14 Jan. 2026
Bacharach and other pop greats were rescued later by experimenters like Elvis Costello and White Stripes.
—Michael Barnes, Austin American Statesman, 8 Jan. 2026
If the experimenter reads the information about which slit the photon passed through, there will never be an interference pattern.
—Paul Sutter, Space.com, 20 Dec. 2025
But finding lightning has proven more elusive on our closest planetary neighbors — even though experimenters in the 1970s did lab work that suggested lightning should exist on Mars.
—Nell Greenfieldboyce, NPR, 26 Nov. 2025
An experimenter screens individuals from a population for a trait of interest, and only those that meet a certain threshold are allowed to reproduce to create the next generation.
—Shraddha Lall, The Conversation, 16 Oct. 2025
Recent Examples of Synonyms for experimenter
researcher
Noun
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The researchers found that the cells retained mechanical integrity under bending, stretching, and compression.—
Bojan Stojkovski,
Interesting Engineering,
21 Feb. 2026
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Who’s Who in America® remains an essential biographical source for thousands of researchers, journalists, librarians and executive search firms around the world.—
Matthew Kayser,
USA Today,
20 Feb. 2026
Cite this Entry
“Experimenter.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/experimenter. Accessed 25 Feb. 2026.
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