a must do

a must do

Something that one should make a concerted effort to do. Oh, a trip to Sedona is a must do! You can really feel the energy there.
See also: must
Farlex Dictionary of Idioms.

a must (do)

and must
n. something that someone ought to do. Seeing the Eiffel tower is a must do in Paris. Tell me some of the “musts” in southern Utah.
See also: must

must

verb
See a must do
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • give (someone) an/the itch for (something)
  • give (someone) an/the itch to (do something)
  • exert
  • exert (oneself)
  • exert oneself
  • lay a (heavy) trip on (one)
  • lay a heavy trip on someone
  • lay a trip on
  • lay a trip on someone
  • embark on