"retroflex" in the verb sense
1. retroflex, replicate
bend or turn backward
articulate (a consonant) with the tongue curled back against the palate
"Indian accents can be characterized by the fact that speakers retroflex their consonants"
"retroflex" in the adjective sense
1. retroflex, retroflexed
bent or curved backward
2. cacuminal, retroflex
pronounced with the tip of the tongue turned back toward the hard palate
Source: WordNet® (An amazing lexical database of English)
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