WordNet: retroflex

articulate (a consonant) with the tongue curled back against the palate; "Indian accents can be characterized by the fact that speakers retroflex their consonants"

• hypernym articulate, enounce, enunciate, pronounce, say, sound out

retroflex

• (englanti) retroflexion (derivationally related)
• (suomi) taivuttaa taakse (synonyymi; <unconfirmed/>)