{v. phr.}, {informal} To waste time; be slow or idle. * /Grandpa spends so much time sitting and thinking that Grandma accuses him of letting the grass grow under his feet./
LET THE GRASS GROW UNDER ONE'S FEET
Meaning of LET THE GRASS GROW UNDER ONE'S FEET in English
Dictionary of English idioms . Словарь английских идиом. 2012