crease up

crease up

To become creased or wrinkled, as of clothing. After sitting for so long in my suit, the pants are starting to crease up.
See also: crease, up
Farlex Dictionary of Idioms.

crease something up

to get creases or folds into something that is supposed to be flat; to wrinkle one's clothing. (Very similar to messed up.) You will crease your jacket up if you don't sit up straight. I was sitting so long that I creased up my pants.
See also: crease, up
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • crease
  • creased
  • rumple up
  • fold (something) into (something)
  • fold into
  • iron out
  • ironing
  • crinkle up
  • fold up
  • cream (one's) pants