Wiktionary
ungrammatically
adv. In an ungrammatical manner.
WordNet
ungrammatically
adv. in an ungrammatical manner; "this child speaks ungrammatically" [ant: grammatically]
Usage examples of "ungrammatically".
He seemed somewhat pensive and absentminded, spoke abruptly and somehow ungrammatically, somehow strangely shuffling his words, and became confused when he had to put together a longer phrase.
His own tribal language he knew quite ungrammatically, like many of his tribe in Russia.
There, as the poet ungrammatically observes, there let them lay, like the goose with the golden eggs.