Broca’s aphasia

Expressive aphasia, also known as Broca’s aphasia, is characterized by partial loss of the ability to produce language (spoken or written), although comprehension generally remains intact. A person with expressive aphasia will exhibit effortful speech. Speech generally includes important content words, but leaves out function words that have only grammatical significance and not real-world meaning, such as prepositions and articles. https://en.wikipedia.org/wiki/Expressive_aphasia