According to the World Wide Words-Michael Quinion Writes on International English from a British Standpoint, lackadaisical means:

"Lacking enthusiasm and determination; carelessly lazy.

This word origintes from an old saying of regret or dismay, lack-a-day!, which is a shortened form of alack-a-day!. Alack dates back to medieval times. The word lackadaisy appeared in the 18th century. The first person recorded as using it was Laurence Sterne, in his Sentimental Journey of 1768. Later it moved towards the idea of somebody who was affectedly languishing, and thence to someone merely lazy."

According to the Websters Dictionary Online.org site, the word lackadiasical is entered into internet search engines an average of five times a day.

I received a copy of an email today where someone was asking my assistant to be sure and do something on Monday in an expeditious way. I jokingly turned to her and said, "what? rather than the lackadaisical way we usually do it?" It gave us a nice chuckle at the end of the week.

But, it got me to thinking. I don't believe I have ever, in my 46 years, written or typed the word lackadaisical. I wasn't even sure how to spell it. So, I decided that this under-used and unappreciated word needed its own hub. This is for you, Lackadaisical!

Lackadaisical and Complacency aren't a good pair. When you spot the two of them out and about together you can expecting Whining to join them. Whining is loud and obnoxious, you can't miss him. He talks non-stop in a nagging voice. Lackadaisical and Complacency just stand there with blank looks on their faces. Come to think of it, they always have that "light's on, but nobody's home" look on their faces.

My advice is to steer clear of all thre of them. They are nothing but trouble.