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One associated with, concerned with, or engaged in: balladeer.
[French -ier, from Old French, from Latin -ārius, -ary.]
1. (forming nouns) indicating a person who is concerned with or who does something specified: auctioneer; engineer; profiteer; mutineer.
2. (forming verbs) to be concerned with something specified: electioneer.
[from Old French -ier, from Latin -arius -ary]
energy efficiency ratio.
adv. Chiefly Literary.
a noun-forming suffix occurring orig. in loanwords from French (buccaneer; mutineer; pioneer) and productive in the formation of English nouns denoting persons who produce, handle, or are otherwise associated with the referent of the base word (auctioneer; engineer; mountaineer; pamphleteer); now frequently pejorative (profiteer; racketeer). Compare -ary, -er2, -ier2.