What does tautologous mean?
“Tautologous” describes language that says the same thing more than once without adding meaning. A sentence may be grammatically correct, even polished, yet still be tautological if its second clause simply restates its first. The word is especially useful in discussion of writing, reasoning, and rhetoric, where unnecessary repetition can obscure an argument rather than strengthen it. It can also carry a mildly critical tone, suggesting that a speaker is being empty, repetitive, or evasive, so it is most appropriate when the repetition is genuinely unnecessary rather than purposeful emphasis. Related forms include the noun “tautology,” the adjective “tautological,” and the adverb “tautologically.” Although “tautology” is sometimes used loosely for any repetition, its stricter traditional sense is a proposition that proves or explains itself, such as “Some widows are women; all women are people, so some widows are people.” Understanding “tautologous” helps distinguish meaningful reinforcement from language that merely circles back to its starting point.
adjectiveCharacterized by saying the same thing more than once without adding meaning; needlessly redundant.
- Needlessly redundant or repetitive, especially in a statement, argument, or piece of writing.
"The chairman's tautologous response merely restated the proposal."
"The chairman's tautologous response merely restated the proposal."
"That explanation is tautologous: its final sentence adds no new information."
From Greek roots meaning “same” and “word,” tautologous literally identifies language that keeps saying the same thing.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does tautologous come from?
The English adjective tautologous was formed from tautology with the suffix -ous. Tautology comes through Latin from Greek tautología, a word built from tautos, meaning “same,” and lógos, meaning “word” or “proposition.” The same roots also underlie forms such as tautologic and tautologize.
Related word forms
How tautologous is actually used
Formal and mildly critical, this term is commonly used in literary criticism, rhetoric, logic, and discussions of writing. It identifies repetition that adds no meaning, rather than repetition used deliberately for emphasis or clarity.
Easily confused with tautologous
Tautologous is the adjective describing unnecessary repetition, whereas a tautology is the redundant statement or form of reasoning itself.