halfassitude 

One who has half-ass attitude towards things, usually due to lack of interest.

I do not understand the halfassitude shown by my younger brother, especially when doing things not for himself.

halfassitude by Jonathan Archer March 16, 2005

halfasseditude 

The quality of being able to start many projects without ever fully completing them. This can apply to one or more people, and is often times habitual.

"Dude, when are they gunna fix the hot tub at your apartment?"
"Who knows, the halfasseditude at that place is rediculous.

halfasseditude by Poon_Daddy October 21, 2007