First, let break it down into two components "-ers" = "-er" + "s", where "s" denotes the plural form. Now get back to "-er"
The common usage of the "-er" is for denoting a resident or inhabitant of (the place denoted by the proper noun); used to form a demonym.
e.g: New Yorker, Londoner, Dubliner
Another popular usage is that it is added to a number, measurement or noun denoting a quantified set). A name for a person or thing that is based on a number (with or without a noun).
e.g: three-wheeler, first-grader
Check out the following paragraph:
"Baltimore Ravens defeat the New England Patriots 28-13 to win the AFC Championship and advance to the Super Bowl.
Super Bowl XLVII will feature a battle between brothers as head coaches: John Harbaugh of the Ravens vs. Jim Harbaugh of the 49ers."
The 49ers which is the short form of the San Francisco 49ers which are an American professional football team. The name "49ers" comes from the name given to the gold prospectors who arrived in Northern California around 1849 during the California Gold Rush.
For a complete reference see the related link below.
repulsivenessrepulsively
Prefixes and suffixes in like a name like a person
ers is bitter vetch
reluctantly
The suffixes of bakrey is -ery
Some suffixes for "correct" are -ion, -ly, -ness, -ible.
Some suffixes for "sharp" could be "sharply" or "sharpen."
Some common suffixes for stationery are -ery, -ary, -ary, and -er.
Prefixes: pre-, re- Suffixes: -er, -ing
Some suffixes for "cover" include "coverage," "covered," "covering," and "coverable."
Some common suffixes for "short" include "-en" (shorten) and "-ness" (shortness).
Some common suffixes for the word "knowledge" are "-able," "-less," and "-able."
repulsivenessrepulsively
Prefixes and suffixes in like a name like a person
Prefixes: by-, sur- Suffixes: -able, -er, -ing
Some common suffixes for "land" include "-ing" (landing), "-ed" (landed), and "-scape" (landscape).
Some suffixes for the word "accept" are accepted, accepting, accepts, acceptability.