all clear

noun

1. the signal that an air raid or other danger is over.

all clear

noun

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

Word History and Origins

Origin of all clear¹

First recorded in 1915–20

Example Sentences

Already today there have been three bomb threats on other services, forcing staff to evacuate the trains until explosives experts have given the all clear.

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It is not at all clear that the constitution will define next year's contest, for all that John Swinney says he is targeting an SNP majority to deliver indyref2.

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That the public would accurately attribute blame is not at all clear, either.

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Given the all clear from cancer in December 2022, he now has a career he loves making content and talking about his experiences to raise awareness.

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He said they expect it will be at least two to three more hours until authorities can give the "all clear".

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Related Words

• green light