let the grass grow under (one's) feet

let the grass grow under (one's) feet

To be inactive; to do nothing or stand still. Often used in the negative as an imperative, such as "don't let the grass grow under your feet." I used to let the grass grow under my feet, and I missed out on a lot of opportunities. Don't let the grass grow under your feet, kid. Get to work!
See also: feet, grass, grow, let
Farlex Dictionary of Idioms.

let grass grow under one's feet

Fig. to do nothing; to stand still. Mary doesn't let the grass grow under her feet. She's always busy. Bob is too lazy. He's letting the grass grow under his feet.
See also: feet, grass, grow, let
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • let grass grow under feet
  • let it roll
  • Let it roll!
  • don't let the grass grow under (one's) feet
  • don't let the grass grow under one's feet
  • don't let the grass grow under your feet
  • let in
  • let (something) rip
  • let rip
  • let something rip