reduplication

English

English Wikipedia has an article on:

reduplication

Wikipedia

From re- +‎ duplication.

reduplication (countable and uncountable, plural reduplications)

(linguistics) The act of, or an instance of, reduplicating.
- 1958, Anthony Burgess, The Enemy in the Blanket (The Malayan Trilogy), published 1972, page 256:
  Her Malay was the Malay of the Staate of Lanchap [...] and she spoke it fierily, with crisp glottal checks, with much bubbling reduplication.
- 2019, Li Huang, James Lambert, “Another Arrow for the Quiver: A New Methodology for Multilingual Researchers”, in Journal of Multilingual and Multicultural Development, →DOI, page 10:
  Grammatically, Malay uses reduplication for plurals (burung = bird, burung-burung = birds) and thus repeated words are commonly heard in Malay speech[.]
(anatomy) The folding or doubling of a part or organ.

Here are examples of reduplication in English:

Type	Accents, etc.	Examples
Exact	acute-null accents baby-talk-like	bye-bye, choo-choo, night night, no-no, pee-pee, poo-poo
Contrastive focus reduplication	emphasis on first word	I want salad-salad, not tuna salad; milk milk, not almond milk
Ablaut	acute-grave accents high-low vowels front-back vowels	chit-chat, criss-cross, knick-knack, jibber-jabber, splish-splash, zig-zag
Rhyming	acute-acute accents varied initials	hokey-pokey, okey-dokey, super-duper, wingding
Shm-reduplication	altered initials	fancy-shmancy (or fancy-schmancy), pork-shmork, work-shmork (or work-schmerk, etc)

the act of, or an instance of, reduplication