past (someone's or something's) prime

past (someone's or something's) prime

No longer in an ideal state or condition. Many gymnasts are past their prime when they are only teenagers. This computer is so slow that it's definitely past its prime.
See also: past, prime
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

past someone's (or something's) prime

Fig. beyond the most useful or productive period. Joan was a wonderful singer, but she's past her prime now. This old car's past its prime. I'll need to get a new one.
See also: past, prime
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

past one's prime

Beyond the peak of one's powers, as in Jean still plays tennis but at 79 she's obviously past her prime. Also see the synonym over the hill; prime of life.
See also: past, prime
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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