be (dead) set on (something)

be (dead) set on (something)

To have a strong (and sometimes inflexible) desire for something. We were all dead set on traveling to Spain for the summer, until Lizzy broke her leg and we had to cancel it. I wanted to spend the money on a new car, but my husband was set on getting new furniture for the living room.
See also: on, set
Farlex Dictionary of Idioms.

be dead set on something

If you are dead set on doing something or having something, you are determined to do it or get it. I'm dead set on getting dancing lessons now. To my surprise, he was dead set on a new career as a solicitor.
See also: dead, on, set, something
Collins COBUILD Idioms Dictionary, 3rd ed.

be (ˌdead) ˈset on something/on doing something

want to do or have something very much; be determined to do or have something: She’s dead set on leaving her job and emigrating to Canada.
See also: on, set, something
Farlex Partner Idioms Dictionary
See also:
  • be dead set on something
  • be set on something/on doing something
  • travel on (one's) own
  • fill or kill
  • FOK
  • cancel (one's) Christmas
  • cancel Christmas
  • cancel someone’s Christmas
  • opportunity
  • a golden opportunity