-poo

• poo

• (UK) IPA^(key): /puː/, sometimes including reduction of the preceding /i/ to /ɪ/
• (US) IPA^(key): /pu/

Unknown, probably arbitrary or from poo.

-poo

1. Added to nouns, especially personal names, ending in -y or -ie, or with this sound inserted, to form affectionate, playful diminutives.

   Fifi! Here girl! Time for walkiepoos [walkies]! — Woof! Woof!

   • 1908 January 28, Hamilton Daily Republican News, page 8:

     This is my little dog, Pinky-Panky-Poo. Bark at the gentleman, Pinky-Panky-Poo.

   • 1932, James Mitchell, Sunset Song, page 21:

     ...they would scraich out ‘Inky poo, your nose is blue, You're awful like the Turra Coo!’ whenever they saw Ellison go by.

   • 2002, William Kennedy, Roscoe, page 241:

     As Elisha passes her on his way to the microphone she does her boa-constrictor number, big huggypoo, big kissypoo. Once past Pammypoo, Elisha makes a speech.

   • 2018, Adrian Truss, ‎David Huband, ‎Bruce Hunter, Illustrated Men's Book of Letters (page 218)

     As you will surely appreciate, time is of the essence in solving a murder like this so please let us known as soon as possy if you are able to come and give us the old helpy-poo, eh?

Clipping of poodle.

-poo

1. Used for constructing a breed name of designer dogs one of whose parents is a poodle.

• “-poo, comb. form”, in OED Online ⁠, Oxford: Oxford University Press, 2006.

• OOP, oop