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2.
The period of time between Christmas and New Years. Called Decembuary because it is a mix of December and January.
We will have our Decembuary feast on the 26th
by erererer November 28, 2006
 
1.
The month of the year between December 27 through January 25 (December + January = Decembuary) where you are too lazy to put away your christmas lights and decorations, thus giving a false sense of a time of year.
Its a slur of the two months.
Decembuary is the month where lazy asses are too wasted watching the bowl games to take down their decorations.
by the poster of this word January 01, 2010
 
3.
The intoxicated state the majority of the world are in on new years Eve, which blurs the old year and new one together.
LITTLE GIRL: daddy where was I made?
DAD: well your mother and I made you somewhere in the middle of decembuary I'm pretty sure.

LITTLE GIRL: huh?
DAD: uhh... You were made in heaven, yeah and the stork brought you here.
by ashleygemini May 11, 2009
 
4.
A month of a year that takes place December 27 through January 25 (December + January = Decembuary) where you are too lazy to put away your christmas lights and decorations, thus giving a false sense of a time of year.
Decembuary is the month where lazy asses are too wasted watching the bowl games to take down their decorations.
by the poster of this word January 01, 2010