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An Ecuadorean expression used to denote extreme cold, just as English speakers say "brrr". It's meant as an onomatopoiea for chattering teeth. Comes from the Quichua indigenous language.
*Juan doused Maria with cold water*
Maria: Achachay, hijueputa!

Maria: Today it's 40 degrees!
Juan: Achachay! Turn on the heat.
by ƱaƱo November 24, 2012
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