• synonyms


See more synonyms for unbolt on Thesaurus.com
verb (used with object)
  1. to open (a door, window, etc.) by or as if by removing a bolt; unlock; unfasten.
  2. to release, as by the removal of threaded bolts: He unscrewed the nuts and unbolted the inspection cover.
Show More
verb (used without object)
  1. to become unbolted or unfastened.
Show More

Origin of unbolt

1425–75; late Middle English; see un-2 + bolt1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for unbolt

Historical Examples

  • Eager as themselves, I hastened to unbolt the door and set them free.

    Confessions Of Con Cregan

    Charles James Lever

  • You've got to go f'm there to the front an' unbolt the door.

    The Boy Scout Treasure Hunters

    Charles Henry Lerrigo

  • He was angry that she should have dared to unbolt the door, or to withdraw the bars.

    The Vicar of Bullhampton

    Anthony Trollope

  • This Scott—if he was out of the way, they could unbolt the doors and walk out.

  • Can you get through one of these windows, Ito, and unbolt the door?

    The Mystery Girl

    Carolyn Wells

British Dictionary definitions for unbolt


verb (tr)
  1. to unfasten a bolt of (a door)
  2. to undo (the nut) on a bolt
Show More
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012