What manner of articulation is characterized by friction caused through the lips, air, tongue, or teeth, often resulting in a hissing sound?

Fricative sounds are characterized by the production of friction in the airflow as it passes through a narrow constriction along the vocal tract. In creating these sounds, the air is forced through a tight space, causing turbulence, which often results in a hissing or buzzing sound. Common examples of fricatives include sounds like "f," "v," "s," and "z."

This articulation occurs at various places in the mouth, such as between the tongue and the teeth or between the lips. The defining feature of fricatives is this continuous airflow that creates the characteristic sound, which distinguishes them from other types of consonants, such as nasals, which involve airflow through the nose, glides, which are more vowel-like in articulation, and affricates, which are produced as a combination of a stop followed by a fricative.