Is it spring yet? In the 1945 Rodgers and Hammerstein musical State Fair, the love-sick ingenue sings, "Oh, why should I have spring fever, when it isn't even spring?" Symptoms of this pseudo-illness, which entered English in the mid-1800s, go in two opposite directions: a sense of lethargy associated with the season change, or a new-found energy after being confined mostly indoors for the winter. In Old English, and even as late as the 1300s, Lent was used to refer to the post-winter season, though by the end of the 14th century, spring had firmly taken its place. As spring springs, let's check out some of the great words of the season!