of (one's) life

of (one's) life

Used to indicate something that has an extreme impact on one's life, for good or ill. These underdogs are in the fight of their lives to defy expectations and go home with the championship! This has been, without a doubt, the worst vacation of my life. I was fortunate enough to have found the love of my life in high school.
See also: life, of
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

of one's life

Being the greatest, worst, or best occasion of a lifetime, as in She was having the time of her life at the party, or The threatened takeover of the company put the president in the fight of his life.
See also: life, of
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.
See also: