This verb is a godan conjugation.

That man-child is still living in his parents' house.

He is called a 'kid's room uncle', and is alienated from society.

I reserved a single room.

We booked a double room.

The river water is gurgling down.

He drank the coffee gurgly.

He caught a cold and was coughing, making a 'gohogoho' sound.

He went to China to learn Wu language.

He made a bold statement about his abilities.