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Definitions

ungrammatical

[uhn-gruh-mat-i-kuhl] / ˌʌn grəˈmæt ɪ kəl /
ADJECTIVE
not using the correct rules of grammar
Synonyms
Antonyms


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.

Yet, somehow, he was producing paragraphs of eighth-grade level prose instead of the barely-intelligible and ungrammatical screeds — fourth-grade level prose, according to a 2024 New York Times analysis — he usually whips out.

From Salon • Sep. 3, 2025

Smothers died on Dec. 26, and that same day, a new book with a clunky and ungrammatical title became available on Amazon: “Tom Smothers: Revealing 4 Untold Truth About Half of Smothers Brother.”

From New York Times • Feb. 18, 2024

The wording is ungrammatical and occasionally combines ideas that might otherwise have been kept apart.

From The New Yorker • Aug. 12, 2018

Is it possible that the slogan’s ungrammatical inelegance is part of that rebuke?

From Slate • May 7, 2018

Would you like paper or conveniently? is ungrammatical, because conveniently is a modifier, and it’s a modifier that doesn’t work with like; you would never say Would you like conveniently?

From "The Sense of Style" by Steven Pinker