theoretically
Americanadverb
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in principle; according to reasonable assumptions or rules, as opposed to what actually happens.
Theoretically they are free to work, but in practice they can’t because we do not recognize their credentials.
-
in a way that is purely speculative; hypothetically.
It seems that theoretically the central bank could constrain government spending by allowing treasury checks to bounce.
-
according to, or in a way that relates to, a scientific theory.
An alloy with a particular composition can be modeled to determine theoretically whether it has suitable mechanical and physical properties for medical applications.
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in a way that relates to the set of principles or methods belonging to a particular subject, art, or activity.
Taking classes in all four fields—politics, economics, history, and culture—allows students to be grounded theoretically in the humanities and social sciences.
Other Word Forms
Etymology
Origin of theoretically
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.
Medicare looks at your tax return from two years earlier, so a conversion this year could theoretically raise your premiums in 2028.
From MarketWatch ● Nov. 2, 2026
Last year, tests carried out for Oslo's Ruter public transport authority revealed that Chinese manufacturer Yutong could theoretically remotely immobilise its electric buses with their "over-the-air" update system.
From Barron's ● Oct. 17, 2026
Although reducing inflammation could theoretically influence the disease, the study did not demonstrate that GAE prevents cartilage deterioration or reverses existing joint damage.
From Science Daily ● Oct. 14, 2026
Apple also has access to more personal data, which could theoretically be used for compelling AI features, though new AI agents show the technology is advancing faster than Apple’s ability to keep up.
From The Wall Street Journal ● Oct. 14, 2026
But right now, theoretically, they had Joe Mondragon more or less where they wanted him.
From "The Milagro Beanfield War" by John Nichols
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
