A guttural sound—such as speech, laughter, or a grunt—is formed or pronounced in the throat.

// Her friends always found her deep, guttural laugh to be highly contagious.

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“Mantled howler monkeys are one of the largest primates in Mexico and Central America, measuring around 25 inches on average. Covered in thick black fur, they are known for their low, guttural calls.” — Manuela Andreoni, The New York Times, 22 May 2024

Get your mind out of the gutter. Despite appearances, guttural is not related to the English word gutter; that word comes ultimately from the Latin verb gutta, meaning “drop,” while guttural has a different Latin root: the noun guttur, meaning “throat.” Since the late 1500s guttural has been used to describe sounds that are formed or pronounced in the throat, from cries and sobs to howls and grunts. A second sense, describing sounds or utterances which strike the listener as harsh or disagreeable (as in “the guttural roar of a motorcycle engine disturbed the afternoon’s quiet”) followed. A new sense appears to be developing as well, describing things that are instinctively or deeply felt irrespective of grunts or noises from the throat, as in “a guttural response/reaction,” but this sense has yet to meet the criteria for inclusion in our dictionary.