Ungrammatical Definition
 ŭngrə-mătĭ-kəl 
    adjective
  
 Not in accordance with the rules of a grammar.
 Webster's New World 
Synonyms: 
 
- ill-formed
Antonyms: 
 Origin of Ungrammatical
-  un- +"Ž grammatical From Wiktionary 
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