noun
aphasia
uh-FAY-zhuh/əˈfeɪʒə/
Loss or impairment of language ability caused by brain damage.
The therapist helps a patient with aphasia practice naming familiar objects.

Etymology
The pieces express “without utterance,” the image behind Greek “speechlessness.” In the selected medical sense, the impairment concerns language more broadly, including understanding as well as speaking.
In context
… we move to aphasia which is a language disorder caused by different types of strokes and also the sort of that happens with aging
More examples
- His aphasia affects reading as well as speech.
- The assessment examines how aphasia has changed her communication.
- The family learns ways to communicate with someone experiencing aphasia.
Similar words
- dysarthria
- Impairs speech production through muscle control rather than language itself.