Final answer:
A critical type of discourse often spoken and directed towards someone or something is called a diatribe.
Step-by-step explanation:
In English, a critical type of discourse often spoken and directed towards someone or something can be described as a diatribe. A diatribe is a form of spewing hot, inflammatory speech that is usually negative and critical in nature. It is a lengthy and passionate monologue where someone expresses strong disapproval or criticism towards a specific person, idea, or situation. An example of a diatribe could be a father lecturing his son about his wasted life.