What is the plural possessive form of Christmas?

Answer 1

There are two rules to take into account:

# The plural of nouns ending in -s is made by adding -es. Examples: bus, buses; Christmas, Christmases. # The possessive of a plural noun is made by adding an apostrophe ('). Examples: buses, buses'; Christmases, Christmases'.

The apostrophe at the end of plural words such as buses'does not change the way the word is spoken. We do not say busiziz .