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tar·na·tion(tär-nā′shən) New England & Southern US
The act of damning or the condition of being damned.
Used to express anger or annoyance.
Word History: The history of the noun and interjection tarnation illustrates a phenomenon called taboo deformation, by which words that can be considered offensive or impolite under some circumstances are made more acceptable or softer-sounding by altering one or more sounds that make up the words. Tarnation appears to be a variant of darnation, itself a taboo deformation of damnation, in the same way that darn is an alteration of damn. Tarnation, however, seems to have been influenced by tarnal!, another mild oath that is derived from the adjective eternal—as used in eternal damnation! for instance. The taboo deformations darn, darnation, and tarnation have been used in New England since the late 1700s.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a euphemism for damnation
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
damnation; hell (used as a euphemism).
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
tarnation(o.f.) [tɑːˈneɪʃən] N (US) (dial) → ¡diablos!
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005