erbium
1
earned run
2
emergency room
-er
4 of 5adjective suffix or adverb suffix
hotter
drier
and of some adjectives and adverbs of two or more syllables
completer
beautifuller
variants or less commonly -ier or -yer
1
a
: person occupationally connected with
furrier
lawyer
b
: person or thing belonging to or associated with
header
old-timer
c
: native of : resident of
cottager
New Yorker
d
: one that has
three-decker
e
: one that produces or yields
porker
2
a
: one that does or performs (a specified action)
—sometimes added to both elements of a compound
batter
builder-upper
b
: one that is a suitable object of (a specified action)
broiler
3
: one that is
—in all senses -yer in a few words after w, -ier in a few other words, otherwise -er
foreigner
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Merriam-Webster unabridged



