Definition
An 'obstruent' is a consonant sound produced with significant obstruction of the airflow in the vocal tract. This category includes stops (like /p/, /t/, /k/), fricatives (like /f/, /s/, /θ/), and affricates (like /tʃ/, /dʒ/). Obstruents are generally louder than sonorants. They create a more noticeable interruption in the sound stream. They are crucial for distinguishing words. It makes them super useful. Think of them as the sharp, defined sounds in speech.