Also found in: Dictionary, Thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia.
Related to adder: puff adder, Full adder

deaf as an adder

Unable to hear anything. The deafness of an adder is referred to in the Bible. A: "I'm shouting, and he's ignoring me!" B: "Oh, he's deaf as an adder! Write down whatever you're trying to communicate to him." What are you, deaf as an adder? You hear me calling you for dinner, so get in here!
See also: adder, deaf

*deaf as a post

deaf. (*Also:as ~.) When my cousin was a teenager, she played her drum set without ear protection, and she was as deaf as a post by the age of twenty-five. Mark can't hear you even if you shout; he's deaf as a post.
See also: deaf, post

deaf as a post

Also, deaf as an adder. Unable to hear or to listen, as in Speak louder, Grandpa's deaf as a post. The first simile has its origin in John Palsgrave's Acolastus (1540): "How deaf an ear I intended to give him ... he were as good to tell his tale to a post." It has largely replaced deaf as an adder, alluding to an ancient belief that adders cannot hear; it is recorded in the Bible (Psalms 58:3-5).
See also: deaf, post

deaf as a post

If someone is as deaf as a post, they are very deaf. My Dad is as deaf as a post.
See also: deaf, post

deaf as an adder (or a post)

completely or extremely deaf.
The traditional deafness of an adder is based on an image in Psalm 58:4: ‘the deaf adder that stoppeth her ear’.
See also: adder, deaf

(as) deaf as a ˈpost

(informal) unable to hear anything: You’ll have to shout if you want her to hear you. She’s as deaf as a post.
See also: deaf, post
References in periodicals archive ?
In Section II 10T and 14T Full adder topologies are reported and briefly described.
The logic partitioning of the pure Carry-Lookahead Adder (CLA) is not possible due to its complex and irregular structure.
After striking such a frog, a floodplain death adder thrashes around and lies on its back with its mouth open, Shine reports.
He and Phillips first saw the snake behavior during a recent project in Australia's northern floodplains when they fed captured adders their usual diet of local frogs.
Adders are generally very shy and will get out of the way of people and dogs.
For the milder weather we've been enjoying may bring a few adders out to play.
FIR which is designed based on kogge stone adder and nikhilam navataram dashtah sutra for the faster arithmetic calculation and faster computation for the signal processing and other FIR application [2].
As for Asia-Pacific, and the broadcast chain specifically, Adder Technology reports seeing increasingly more customers beginning to host systems in dedicated computer rooms.
The NHS said the adder is common throughout mainland Britain and islands off the west coast of Scotland.
Matthew's badly bruised and swollen leg after being attacked by adder (above)
Adder will be demonstrating to visitors the performance, flexibility and ROI that IP-based KVM can bring to broadcast operations, from gallery control and outside broadcast, to the post production suite, by showcasing a range of KVM, extension and connectivity solutions.
Full adder cell is the main core of the arithmetic processors.
But that was of little comfort to the wildlife charity desperately seeking a politico to fly the flag for the threatened adder, Scotland and Britain's only poisonous snake.
Connectivity solutions provider Adder today unveiled its latest generation of rack trays, ADDERView RDX.