grammarlessadj.
/ˈɡraməlɪs/ Having no grammar.
1.
a. Of a language: Destitute of a system of grammatical forms, or of features susceptible of grammatical treatment.
ΘΚΠ
the mind > language > [adjective] > characterized by grammar
unaccidentedc1740
resupinate1836
atactic1842
amalgamate1849
anaptotic1850
isolating1860
encapsulating1868
grammarless1868
uninflected1875
amalgamating1877
intercalative1882
postmutative1899
positional1908
1868 Farrar in Jrnl. Philol. No. 2. 20 Chinese has been for thousands of years monosyllabic and grammarless.
1891 Harper's Mag. July 220/1 Ours is really a grammarless language.
b. Of persons, speech, compositions: Showing ignorance of grammar.
ΘΚΠ
the mind > mental capacity > knowledge > conformity with what is known, truth > disregard for truth, falsehood > inaccuracy, inexactness > incorrectness of language > [adjective] > in grammar
incongruous1616
ungrammatical1654
ingrammatical1672
ungrammatic1806
grammarless1823
unsyntactical1865
asyntactic1879
1823 Blackwood's Edinb. Mag. 14 294 Miserable, bald, and even grammarless English is employed.
1891 Daily News 14 Feb. 5/1 Futile romances, tasteless, senseless, grammarless.
2. Having no book of grammar.Apparently an isolated use.
ΚΠ
1854 Fraser's Mag. 50 317 Battling, grammarless and dictionaryless, with a work in a strange idiom.
This entry has not yet been fully updated (first published 1900; most recently modified version published online September 2019).
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adj.1823