articulate, eloquent, coherent, and lucid, would be some examples
You call them 'mute'.
quiet
mute
A person who can speak two languages is called a bilingual.
ventriloquist
A person who cannot hear or speak is commonly referred to as "deaf-mute" in older terminology. However, the preferred term today is "deaf and nonverbal" or "deaf and mute" depending on whether the person communicates primarily through sign language or other means.
If you want to call her do it when you feel comfortable but it is always best to speak in person.
If someone is unable to speak, it's called being 'dumb'.
no you dont
Hysterical.
A person who can speak different languages is called a polyglot.
Dial the person's phone number. When the phone is answered, start talking.