Rhotacism refers to several phenomena related to the usage of the consonant r (whether as an alveolar tap, alveolar trill, or the rarer uvular trill):

  • the excessive or idiosyncratic use of the r;
  • the inability to pronounce (or difficulty in pronouncing) r.
  • the conversion of another consonant into r.

The term comes from the Greek letter rho, denoting "r".

Read more about Rhotacism:  Orthoepy, Linguistics

Other articles related to "rhotacism":

Rhotacism - Linguistics - South Slavic Languages
... Slavic languages (Slovene, Croatian, Bosnian, Serbian, Macedonian, Bulgarian) rhotacism consists of the change from a voiced palatal fricative to a dental/al ...