manther

noun2

1. •
   (US, slang) A woman who actively seeks the casual, often sexual, companionship of younger men.

   • Cougars and manthers (which you should have heard of by now—or you can at least intuit) are always on the hunt for the energetic, supple, and naive. — 2010
2. •
   (US, slang) A man who actively seeks the casual, often sexual, companionship of younger women.

   • “Jolo was a dick magnet but preferred manthers (older men who preyed on younger women) who spend lots of cash on her and me.” — 2011