a Gaulish word LatinizedProbably. Also, as with some many other Celtic tribes, there was more than one tribe known as the
Parisii, one in Gallia and the other in Britannia, in modern-day East Riding of Yorkshire. The usual etymology is that it is related to Old Irish
cuirim 'I place, lay, put' + a suffix -
isio. The German philologist and founder of modern Cletic language studies Johann Kaspar Zeuß glosses Parisii as 'efficaces, strenui' and 'Tatkräftigen, Tapferen' ('the vigorous, brave, doughty',
link). He posited that it was from an earlier
Quarisii, the change of
qu to
p being a common one in Celtic languages.