have legs

have legs

To have the ability to endure, stay relevant, or continue to maintain interest. Said of a concept, phenomenon, something discussed, etc. That theory really has legs—years later, most people still think that the wrong man was convicted.
See also: have, leg
Farlex Dictionary of Idioms.

have legs

If an idea, plan, or story has legs, it is likely to be successful or to continue. Blucher was confident that his concept had legs, so he pressed Cooper for a meeting. In this instance the story might not have legs.
See also: have, leg
Collins COBUILD Idioms Dictionary, 3rd ed.

have ˈlegs

(informal) if a news story, film/movie, etc. has legs, people will continue to be interested in it, or it will be successful, popular, etc. for a long time: We’ll soon see if the movie has legs. Some economists believe that the recovery still has legs.
See also: have, leg
Farlex Partner Idioms Dictionary
See also:
  • put (one) through it
  • put somebody through it
  • take a licking and keep on ticking
  • take a licking but keep on ticking
  • tickin
  • endure
  • he that would have eggs must endure the cackling of hens
  • not bear the sight of (someone or something)
  • not stand the sight of (someone or something)
  • get along without