Meaning: many, countless
- I've told my staff umpteen times to double-check everything, but they still don't do it. What more can I do?
- There have been umpteen research papers proving that diet is one of the major determiners of health and length of life, but most people still eat really bad food.
Jill's been to our office umpteen times, and she got lost on the way here today. Jill's got