In the movies, I see:
Gandalf read and spoke fluent Elvish.
He could read Black Speech. He showed Thorin Oakenshield the note that promised payment for the latter's head. He also chants the ring inscription in The council of Elrond. I'm unsure how fluent was he.
Not sure if it was intentional. However, he asks Lord Elrond if he still read ancient Dwarvish.
Are there mentions in the books about any other languages that he spoke? Languages like Entish, language of Rohan and Gondor, etc.
Could Gandalf speak Entish?is No? – Severus Snape Aug 13 '20 at 06:23