Definition from Wiktionary, the free dictionary
- (originally college slang) Irritable; easily upset; angry; tending to complain. [From 1895]
- His boss gets grouchy when deadlines draw near.
- 1922, Henry William Fischer, Abroad with Mark Twain and Eugene Field, Author's Preface,
- In Berlin I once heard Susie Clemens—ill-fated, talented girl, who died so young—say to her father: "Grouchy again! They do say that you can be funny when company is around—too bad that you don't consider Henry Fisher company."
irritable; easily upset; angry; tending to complain