[ uhn-duhb-uhl ]

verb (used with object),un·dou·bled, un·dou·bling.
  1. to unfold; render single.

Origin of undouble

First recorded in 1590–1600; un-2 + double

Words Nearby undouble

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use undouble in a sentence

  • To undouble him, that he might fit into a coffin, they had been forced to lug him to a fire and thaw him out a bit.

  • His gum boots screeched, the bench creaked as he began to undouble himself.

  • The rheumatiz stiffened me so I couldn't double up, and now it has stiffened me so I can't undouble.

    Giles Corey, Yeoman | Mary E. Wilkins Freeman