I. əz, iz after s, z, sh, ch; z after v or a vowel noun plural suffix
Etymology: Middle English -es, -s — more at (1) -s
— used to form the plural of most nouns that end in s
glass es
z
fuzz es
sh
bush es
ch
peach es
or a final y that changes to i
ladi es
and of some nouns ending in f that changes to v
loav es
— compare -s I
II. verb suffix
Etymology: Middle English — more at (3) -s
— used to form the third person singular present of most verbs that end in s
bless es
z
fizz es
sh
hush es
ch
catch es
or a final y that changes to i
defi es
— compare -s III