wellderly 

Older people, typically retired, who are both fit and healthy. Used by the British parliamentarian Harriet Harman and disliked by some as political jargon that has become associated with raising the age at which retirement benefit may be taken.

From the Indpendent Newspaper:
Introducing the wellderly
Growing numbers of the over-65s want to keep working, volunteer or go on gap years
Antonym frelderly.

wellderly by Johnny Germane November 29, 2012

yellderly 

To be young, most likely a Millennial, but complain as if they are not of this generation and go against social fads.

I'm sorry, am I interrupting your grind session? I'm sorry, I'll let you sink back into your phones. I hate my generation...what do you mean I'm yellderly?!

yellderly by Classy Turian August 28, 2016

yellderly 

A young person who complains that something today is bad and that it was better in the "Good old days" even if they have never actually experienced the alternative.

Jacob: Kids these days can't stop looking at their phones, it was way better back in the 90's.
David: Jacob, you never lived in the 90's, stop being so yellderly

yellderly by The Great Emperor August 28, 2016

wilderly 

An adjective describing a rugged, outdoorsy mountain man.

The wilderly man had just returned from the forest.

wilderly by yourdaddypants July 18, 2005