verb/areˈθiɾ/
to make something/someone numb with cold; to become numbed by cold, to be numbed by cold
From Vulgar Latin arrigēscĕre (“to become stiff”), from Latin arrigĕre (“raise; rouse, excite”). According to Coromines and Pascual, this infinitive arrecir "barely exists" (apenas existe), and prefer to link the adjective arrecido to a supposed verb *arreeçer, of the same etymology, cognate with Galician arrecerse (“get a common cold; become numb”).