Cliché carefree; completely free and unhindered. (*Also: as ~.) Jane is always happy and free as a bird.The convict escaped from jail and was as free as a bird for two days.No, I'm not married. I don't even have a girlfriend. I'm free as the air.
At liberty, without obligations, as in Can you join us tonight?-Yes, I'm free as a bird, or He's free as a bird-he can travel wherever he chooses. [c. 1700]. Also see footloose and fancy-free.