Retroflex sounds are difficult to pronounce.

He stuck out his tongue and licked the ice cream.

This problem is very difficult.

A lingual sound is a sound that uses the tongue when pronouncing.

His English pronunciation is very natural.

He is practicing the pronunciation of Japanese.

The sound was so quiet that I could hardly hear it.

This audio is very clear.

In Sanskrit phonology, retroflex sounds play an important role.

A coronal is a sound that is pronounced using the tip or the upper part of the tongue.