Christmas

The word 'Christmas' is a contraction of 'Christ's Mass', the festival celebrating the mass (Eucharist) of Christ. Its Old English form was 'Cristesmæsse', which directly combined 'Crist' (from Greek 'Christos', meaning 'anointed one') and 'mæsse' (from Latin 'missa', the celebration of the Eucharist). Over centuries, the pronunciation simplified, blending the two elements into a single, seamless term. Thus, the word's literal meaning, "the mass of Christ," perfectly encapsulates its function as the principal feast day commemorating the birth of Jesus.

Structure: christ (Christ) + mas (festival, mass) - christ: From Greek 'Christos', meaning 'anointed one', via Latin 'Christus'. Functions as the core noun, identifying the central figure being celebrated. - mas: From Old English 'mæsse', meaning 'festival, mass', derived from Latin 'missa' (dismissal, mass). Functions as a noun suffix denoting a religious festival or feast day.