Someone who speaks dramatically and impressively could be called a declaim or an orator.
Protest
Dictation .
Irish is Sasanach Scottish is Sasannach
monotone
unemotional
Perhaps you are thinking of Tourette's syndrome.
Someone who speaks directly or openly, without equivocation is someone who speaks with candor.
That is called a soliloquy, where a character speaks their thoughts aloud while alone on stage, or an aside, where a character speaks directly to the audience while the other characters on stage cannot hear them.
talks poorly about someone.
A linguist is someone who studies languages. Apolyglot is someone who speaks more than 2 languages.
God speaks through his written word, the bible. he also speaks by prayer and answering prayer. he often speaks through people, christians.