Ungrammatical

These ungrammatical sentences resulted from the application of the additional rule F.

Let us make an effort -- in parallel with our efforts to identify ungrammatical English sentences -- not to lose through neglect our patrimony.

Anyone who tells you that an English sentence is ungrammatical is almost certain to be wrong.

This sentence is not ungrammatical, but the same meaning can be expressed a bit more concisely.

This sentence is ungrammatical.

It should have been easy for the author to perceive that this sentence was not well constructed; and what can be worse in a book on grammar than an ungrammatical sentence?

My Greek is not the tongue of Homer or Aeschylus but a sloppy ungrammatical sabir lacking Attic salt and tending to a saccharinity which sets my teeth on edge.

That comment seemed to anger Ingraham, who called James’ view a “barely intelligible, not to mention ungrammatical take on President Trump.”

While adopting the pronoun as a nonbinary description is vastly preferable for some, Merriam-Webster says, there has also been some debate that it is ungrammatical.