bye-bye

[bahy-bahy, bahy-bahy]

interjection

1. Informal.,  goodbye.

noun

1. Baby Talk.,  sleep.

Word History and Origins

Origin of bye-bye¹

1700–10; apparently originally nursery phrase used to lull a child to sleep, later construed as reduplicative form of bye, short for goodbye

Idioms and Phrases

Idioms

1. go bye-bye,

   1. to leave; depart; go out.

   2. to go to sleep; go to bed.

Example Sentences

Even when it was banging me over the head, like when he told me he loved me and then quickly quipped, “Unless you get pregnant. Then bye-bye!”

From Los Angeles Times

But if Trump loses in November, bye-bye, inflated valuation.

From Los Angeles Times

Newton then waved bye-bye to a Villanova student section that taunted him all game.

From Seattle Times

Wave bye-bye as they sink like a rock two miles off the Newport Beach coast with eight consecutive losses and counting.

From Seattle Times

But we can say bye-bye to the byes: Every team is in action for the next four weeks.

From Seattle Times

Related Words

• adieu 
• bon voyage 
• goodbye