dig in your heels

dig in (one's) heels

To cling stubbornly to one's beliefs or wishes. Please let me tell my side of the story before you dig in your heels on this, OK? Well, I told Grace she can't go, and now she's dug in her heels as if this party is the most important thing in her life.
See also: dig, heel
Farlex Dictionary of Idioms.

dig in your heels

or

dig your heels in

COMMON If you dig in your heels or dig your heels in, you refuse to do something such as change your opinions or plans. It was really the British who, by digging in their heels, prevented any last-minute deal. I begged her to come home but she dug her heels in.
See also: dig, heel
Collins COBUILD Idioms Dictionary, 3rd ed.

dig in your heels

resist stubbornly; refuse to give in.
The image here is of a horse or other animal obstinately refusing to be led or ridden forwards. Dig in your heels is the commonest form, but dig in your toes and dig in your feet are also found.
See also: dig, heel
Farlex Partner Idioms Dictionary
See also:
  • dig in (one's) heels
  • dig in heels
  • dig your heels in
  • dug
  • dig (one's) heels in
  • dig heels in
  • dig (deep) into (one's) pocket(s)
  • dig down
  • dig (something)
  • dig this
References in periodicals archive
DIG in your heels and make a fashion statement in this year's comeback item - stilettoes.
GO TO ANY LENGTHS; SIZE IT UP: SKIRTS CAN BE A VERY LONG STORY OR SHORT AND SWEET THIS SEASON