The mother-name of S. Caranthir, from which his Sindarin name was derived (PM/353). It is a compound of carnë (carni-) “red” and the primitive form stīrē “face” (VT41/10). In other writings Tolkien gave the words anta or cendelë for “face”.
Conceptual Development: Tolkien also briefly considered the form Carastir in a marginal note (VT41/10).
Carnistir masc. name "red-face", mother-name (never used in narrative) of Morifinwë = Caranthir (PM:353)