From Old English 'cyssan' — likely onomatopoeic, imitating the sound itself, barely changed in over a thousand years.
To touch with the lips as a sign of love, greeting, or reverence.
From Old English 'cyssan' (to kiss), from Proto-Germanic *kussijaną (to kiss), from *kussaz (a kiss), from PIE *ku- or *kus-, widely regarded as onomatopoeic — imitating the sound of a kiss. This is one of the most phonologically stable words in the Germanic family: the form has changed remarkably little in over 1,500 years of attestation. Old High German 'kussen', Old Norse 'kyssa', Gothic 'kukjan' all reflect the same Proto-Germanic root. Outside Germanic, parallel forms appear in Hittite 'kuwash-' (mouth) and possibly in Armenian, though these connections are
The word 'kiss' is thought to be onomatopoeic — an imitation of the sound lips make when pressing together and releasing. Many unrelated languages have phonetically similar words for the same act: Hindi 'chumma,' Malay 'cium,' and Quechua 'much'a' all have a similar labial or palatal quality. The kiss may be one of those concepts where the sound of the word imitates the sound of the action across language families