well up in years
well up in years
Fairly old; advanced in age. I may be well up in years, but I can still hold my own on the race track. She was well up in years before she found a career that she loved.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
well up in years
Euph. aged; old. Jane's husband is well up in years. He is nearly seventy-five. Joan's well up in years but healthy.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.