spring fever

Noun

spring fever (uncountable)

1. (idiomatic) A feeling of invigoration and restlessness associated with the arrival of the warm weather and renewal of nature in the spring season.
   • It's spring fever. . . . And when you've got it, you want—oh, you don't quite know what it is you DO want, but it just fairly makes your heart ache, you want it so! It seems to you that mainly what you want is to get away; get away from the same old tedious things you're so used to seeing and so...1896, Mark Twain, chapter 1, in Tom Sawyer, Detective
   • The air was warm and balmy, carrying that subtle current which caused the mild madness of spring fever.1922, Zane Grey, chapter 10, in The Call of the Canyon
2. (idiomatic) A feeling of laziness or listlessness associated with the arrival of the warm, comfortable weather of the spring season.
   • "Yes, missus," replied the negro, scratching his head, "de horses am berry lazy; spec dey's got de spring fever."1867, Martha Finley, chapter 3, in Elsie Dinsmore
   • Endymion and the Secretary, after sitting on a pier-end watching some barges, . . . were stricken with the very crisis of spring fever and lassitude. They considered the possibility of hiring one of the soldiers' two-tiered beds for the afternoon.1910, Christopher Morley, “The Club in Hoboken”, in Plum Pudding
3. (Australia, obsolete) Scurvy.