agrammatical
adjectiveDefinition of agrammatical
: not conforming to the rules of grammar : ungrammatical
The agrammatical nature of the sentence leaves its meaning unclear … — US Official News Anyone who has had the misfortune of reading a printed copy of an electronic health record knows that it is often an agrammatical, incomprehensible mess.— Lawrence R. Huntoon One's own eyes widen a little as this strange narrative unfolds in a prose that seems initially to be as untidy and agrammatical as subway graffiti.— Anthony Quinn
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