ungrammatical
ung·ram·ma·tical
adjective
1.
not grammatical; not conforming to the rules of grammar or accepted usage
Origin
From un- + grammatical.
Related words
Word family
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.