adv
Uncommon
theoretically
Theoretically (adv) means In theory, though not necessarily true in practice. Example: “Theoretically, the plan should work, but we haven't tested it.”
adv
1
In theory, though not necessarily true in practice.
"Rumors of an indictment had spread through this heavily gay and lesbian community since shortly after the theoretically secret investigation began in 1984."
— Gordon Gottlieb, L.A. Community Divided over Terrigno Indictment (1985)
"Theoretically, the plan should work, but we haven't tested it."
"Theoretically, anyone can apply for the job."
"Theoretically, the train takes an hour, but delays are common in winter."
"No, but insurance does cover it. Theoretically."
— Honest Dentist Appointment (2023)
How to use theoretically
Learner’s notesIn plain EnglishUsed to point out that something is possible or true only as an idea, not confirmed in reality.
Common pairings
theoretically possible
theoretically speaking
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_____, the plan should work, but we haven't tested it.
Etymology
From theoretical plus the adverb ending -ly.
Synonyms
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Related words
Rhymes for theoretically
See all rhymes for theoretically →Frequently asked questions
What does “theoretically” mean?
The word “theoretically” means in theory, though not necessarily true in practice. In plain terms, used to point out that something is possible or true only as an idea, not confirmed in reality.
How do you use “theoretically” in a sentence?
Here is “theoretically” used in a sentence: “Theoretically, the plan should work, but we haven't tested it.”
What part of speech is “theoretically”?
“Theoretically” is an adverb.
Is “theoretically” a common word?
“Theoretically” is an uncommon word in modern English.
What is the difference between theoretically and technically?
Theoretically describes what should happen according to a theory or set of rules, regardless of real-world conditions, while technically points to a literal or strict interpretation of facts. "Theoretically, the plan should work" concerns expected outcomes, whereas "technically, it's still Tuesday" concerns exact fact.
How does theoretically differ from practically?
Theoretically describes what is true in theory or in principle, while practically describes what actually happens once real-world factors come into play. Something can be theoretically possible yet practically very difficult or unlikely.
Is it correct to start a sentence with "theoretically"?
Yes, "theoretically" is commonly used as a sentence adverb to introduce a statement about what should be true in principle, as in "Theoretically, everyone should have received the email." This usage is standard in both spoken and written English.
