The voiced retroflex nasal is a sound used in some spoken languages. It is in Indian English but is similar to /n/ but your tongue is curled back.
Characteristics
The phonation is voiced. This means that the vocal cords vibrate while the sound is being pronounced.
The place of articulation (where the sound is produced) is retroflex, which prototypically means it is articulated sub-apical - with the tip of the tongue curled up. But more generally This means that it is postalveolar without being palatalized. That is, besides the prototypical sub-apical articulation, the tongue contact can be apical (pointed) or laminal (flat).
It is a nasal consonant. This means that air is allowed to escape through the nose, either exclusively (nasal stops) or in addition to through the mouth.
