lose (one's) edge(redirected from lose edge)
lose (one's) edge
To lose the skills, conviction, or energy that helped make one a success before. At one point I was considered one of the best tennis players in North America, but I lost my edge during college.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
lose your edge
COMMON If someone or something loses their edge, they no longer have the special skills, qualities or advantages that they had in the past. As a company, they had lost their competitive edge. Its critics say the magazine is out of date and has lost its edge. Note: If a sword or knife has lost its edge, it is blunt.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012