rhotacism

English

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rhotacism

From New Latin rhōtacismus, from Ancient Greek *ῥωτακισμός (*rhōtakismós), from ῥωτακίζω (rhōtakízō, “to incorrectly use rho”), from ῥῶ (rhô, “rho (the Greek equivalent of r)”) in analogy with ἰωτακίζω (iōtakízō, “to incorrectly use iota”); itself from ἰῶτα (iôta) in analogy with ἀττικίζω (attikízō, “talk like an Athenian”). By surface analysis, rho +‎ -tacism.

rhotacism (countable and uncountable, plural rhotacisms)

Examples (linguistics)
Latin flos becomes florem in the accusative case.

An exaggerated use of the sound of the letter R.
(countable, phonology) A linguistic phenomenon in which a consonant changes into an R; rhotacization.
The inability to pronounce the letter R; derhotacization.
- 1970, Leland E. Hinsie, Robert Jean Campbell, Psychiatric Dictionary, Oxford University Press, page 711:
  For example: r’s may become burrs or guttural grunts or w’s or l’s (rhotacism); […]
- 1976: Deafness, Speech, and Hearing Publications, Inc., of Gallaudet College & the American Speech and Hearing Association, DSH Abstracts, volumes 16–17 (1976–1977), page 289 (Deafness Speech and Hearing Publications)
  From the analysis of Kana writings, hypothesizes that the inability to establish a stable… […] The correction of rhotacism by means of an electric vibrator.
- 2005: Bernard Fogel, PhD, CCC-SLP, Exercising the Rhotacism in Absence of Pathology (ADVANCE)
  It is universally accepted that the rhotacism, a defective utterance of the /r/ sounds, is usually the last and most difficult American English consonant to correct functionally.
  
  I use two methods to help correct the rhotacism.

exaggerated use of the sound of the letter R

linguistic sound change

inability to pronounce the letter R