A spontaneous and thus not very sagacious act of vengeance, i.e. prematurely executed and without consideration of the consequences.

Etymology: A neologism contrived by merging the phonetic similar words retarded and retaliation.
1) How Austrian authorities reacted to the Sarajevo assassination in 1914 may well be described as one of the biggest retardiations in the history of mankind.

2) "My teacher caught me writing urban dictionary entries during class and took my thesaurus away, so I hit him in the face."
by schoolsuspended February 20, 2014
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1. a tardis for retarded time lords.
doctor don called for his assistant, and the retardis, so they could leave.
by stupid retarded time lord March 28, 2006
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A British time machine that malfunctions at every level of performance.
Given all the trouble that Doctor Who has controlling the Tardis' destinations, they should have called it the reTardis.
by Patrick W. Crabtree January 15, 2008
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When you forget essential stuff because you are in a hurry. Retarded behavior combined with being late.
by Richardhg December 12, 2010
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Fusing "retarded" and "Tardis" together, this word describes a person with no knowledge of Doctor Who.
"You don't know who the Fourth Doctor was? What are you, retardis?"
by powerpack February 29, 2012
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Dumb child from Generation Z. (Also known as 'Zoomer')
Retardial: 'Oh nooo, I'm banned from fortnite!' (Cries like a new born baby)
Boomer/Millennial: 'Ok retardial.'

Retardial: 'We need to save the climate, so I'm not going to school!'
Boomer/Millennial: 'Ok retardial.'
by JCFlyingDutchman November 20, 2019
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