Synonyms for Retroflex (same or very similar meaning)
WordNet sense 1 (bend or turn backward):
replicate
WordNet sense 2 (bent or curved backward):
retroflexed
WordNet sense 3 (pronounced with the tip of the tongue turned back toward the hard palate):
cacuminal
WordNet sense 4 (directed or facing toward the back or rear):
backward
From the ODE community, based on WordNet
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