1. tarnation - Noun
2. tarnation - Adjective
3. tarnation - Adverb
4. tarnation - Interjection
(archaic) The act or process of damnation or reprobation; hell.
What in tarnation is going on?
(obsolete) Someone or something that causes trouble; troublemaker.
tarnation
(archaic) Used to express anger, irritation, disappointment, annoyance, contempt, etc.
Bothersome; devilish.
Generic intensifier.
tarnation (comparative more tarnation, superlative most tarnation)
Very; extremely.
Have you ever read the news and muttered to yourself, “What in tarnation is goin’ on here? Source: Internet
Reminds me – where in tarnation is Renee? Source: Internet