theoretical

adjective

the·​o·​ret·​i·​cal ˌthē-ə-ˈre-ti-kəl How to pronounce theoretical (audio)
ˌthir-ˈe-ti-kəl
variants or less commonly theoretic
ˌthē-ə-ˈre-tik How to pronounce theoretical (audio)
ˌthir-ˈe-tik
Synonyms of theoreticalnext
1
: existing only in theory : hypothetical
gave as an example a theoretical situation
2
a
: relating to or having the character of theory : abstract
b
: confined to theory or speculation often in contrast to practical applications : speculative
theoretical physics
3
: given to or skilled in theorizing
a brilliant theoretical physicist

Examples of theoretical in a Sentence

On a theoretical level, hiring more people seems logical. The idea is purely theoretical at this point. The danger is more than just a theoretical possibility.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
For the 9/11 community, that delay isn’t theoretical. Michael Barasch, Boston Herald, 13 Apr. 2026 As production ramps up, the competitive landscape is shifting away from theoretical performance metrics and toward more practical benchmarks such as cost per cycle and alignment with specific applications, CarNewsChina adds. Bojan Stojkovski, Interesting Engineering, 11 Apr. 2026 This week, that scenario started to feel less theoretical. Kevin Collier, NBC news, 11 Apr. 2026 And as with a theoretical modern-day version of Veep, there’s a sense that fact is already starting to lap fiction. Angie Han, HollywoodReporter, 10 Apr. 2026 See All Example Sentences for theoretical

Word History

Etymology

Late Latin theoreticus, from Greek theōrētikos, from theōrein to look at

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of theoretical was in the 15th century

Browse Nearby Words

Cite this Entry

“Theoretical.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/theoretical. Accessed 17 Apr. 2026.

Kids Definition

theoretical

adjective
the·​o·​ret·​i·​cal ˌthē-ə-ˈret-i-kəl How to pronounce theoretical (audio)
ˌthi(-ə)r-ˈet-
variants also theoretic
1
a
: relating to or having the character of theory : abstract
b
: limited to theory or speculation : speculative
theoretical physics
2
: existing only in theory : hypothetical
a theoretical situation
theoretically
-i-k(ə-)lē
adverb

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