IPA: //ˈroʊtəˌsɪzəm//
KK: /ˈroʊtəˌsɪzəm/
A language-related change where a consonant turns into an R sound, or a situation where someone has difficulty pronouncing the R sound.
The child was undergoing speech therapy to address his rhotacism, which made it hard for him to say certain words.
Rhotacism is formed from "rhotas" (from Greek ῥόθος, meaning the letter 'R') and the suffix "-ism" (meaning a practice or condition). The term refers to the linguistic phenomenon where a sound, typically a consonant, is changed to an 'R' sound.
Think of the Greek word for the letter 'R' — 'rhotas' — to remember that rhotacism involves changing sounds to 'R'.