Hiss

google

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late Middle English (as a verb): imitative.

wiktionary

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From Middle English hissen, probably of onomatopoeic origin. Compare Middle Dutch hissen, hisschen.

etymonline

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hiss (v.)

late 14c., of imitative origin. Compare Danish hysse, German zischen, etc. Johnson wrote, "it is remarkable, that this word cannot be pronounced without making the noise which it signifies." Related: Hissed; hissing.

hiss (n.)

"a continued 's' sound, commonly expressing disapproval or contempt," 1510s, from hiss (v.).