Vegetate is a verb that means to live or spend time in a dull, inactive way. 

Our word of the day comes from the Latin word vegere (way GARE ay) which means ‘to be active.’ By the early 17th century, the word had morphed into the English word vegetable. More recently, vegetate has come to mean ‘to be inactive.’ Here's an example:

I was so tired from running that marathon, I wanted to vegetate all weekend. The problem was I had too much to do around the house to be lazy.