The discrimination of people based on age. Adults and children can be agest.
Mrs.Odell was agest at P.E. today.
by Jack Smigel April 19, 2017
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A single man over the age of 40 usual divorced who only dates 30 year olds and under. These men can typically be found on every dating app.
Agest:

Greg “Laura is hot but she just turned 34. Does she have a younger sister?”
by Iza Live August 9, 2018
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A young woman who rejects just men because of there age and no other reason.
That young agest twerp just turned me down when I told her my age and she didn't even look at me.
by Deep Blue 2012 July 14, 2009
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