interjection Chiefly British.
Origin of ta ta
Examples from the Web for ta-ta
Of course, it might wind up with people thinking both of us are ta-ta!Legacy|James H Schmitz
After that he looked as if he might cry again, and I didn't have any more cake and so I showed him the duck and he said 'Ta-ta.'Seeing Things at Night|Heywood Broun
Ta-ta,” said the baronet rather dismally to his chum; “they call me Tomkins!The Master of the Shell|Talbot Baines Reed
He expressed his delight every now and then by uttering the syllables "ta-ta."Willis the Pilot|Johanna Spyri
"Ta-ta," McGuffey cried in his tantalizing falsetto voice, and followed his leader into the briny deep.Captain Scraggs|Peter B. Kyne