Agent noun of recommend; one who recommends.(noun)
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Use "recommender" in a sentence
"A: General letters of recommendation are welcome provided they are less than a year old and the recommender is aware that his or her letter is being used."
"However, librarians now have a number of tools and systems to supplement their efforts, mainly through modern technologies called recommender systems and techniques like collaborative filtering."
"The technology that now sort-of does this is called recommender systems, and Amazon is considered the gold standard of "if-you-like this, you'll-like-that" programs."