all clear

See synonyms for all clear on
  1. the signal that an air raid or other danger is over.

Origin of all clear

First recorded in 1915–20

Words Nearby all clear Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use all clear in a sentence

  • When the all-clear signal sounded inside the Shed, nobody paid any attention.

    Space Platform | Murray Leinster
  • "Think o' when the all-clear bugle sounds in Fulham," responded Bindle.

    Adventures of Bindle | Herbert George Jenkins
  • He remembered that Webster had promised to come and knock an all-clear signal on the door.

    The Girl on the Boat | Pelham Grenville Wodehouse

British Dictionary definitions for all clear

all clear

  1. a signal, usually a siren, indicating that some danger, such as an air raid, is over

  2. an indication that obstacles are no longer present; permission to proceed: he received the all clear on the plan

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