cacuminal

/kəˈkjuːmɪnəl/
adjective
  1. Relating to or pronounced with the tip of the tongue curled back toward the hard palate; retroflex.
    • In phonetics class, we practiced making a cacuminal 't' by curling the tongue backward.
    • Linguists study cacuminal consonants to understand how different languages use tongue placement.
    • The cacuminal sound in some Indian languages is difficult for English speakers to imitate.
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