words to describe one's speech

Straight shooter

A person who speaks directly and honestly

“Hinata-san is known as a straight shooter so he's the best person to ask about the rumored layoffs.”

Backpedal

To try to take back one's words

“The politician backpedaled quickly when he realized his speech had angered some of the audience.”

Smooth talk (verbal phrase)

To calm or charm with one's words

“Miura-san is usually able to smooth talk her employees into agreeing with her.”

Note:Also used as a noun:“Miura-san is a smooth talker and can convince her employees to agree with her.”

Spin (verb)

To further explain a comment or decision to make it seem more positive

“The public relations team is trying to spin the minister's negative comments on the dollar/yen rate.”

Note:Also used as a noun:“The public relations team is trying to put a spin on the minister's negative comments on the dollar/yen rate.”

Eat crow

Admit one's statement was incorrect

“Suzuki-san insisted that his budget calculations were correct but had to eat crow when the accountant found several mistakes.”