爽快 (shuǎng kuai): refreshed; rejuvenated; frank and straightforward

I asked him whether he could send me the report before tomorrow; he agreed without hesitation and even said he'd start writing tonight.

After a busy morning, a hot shower and a glass of iced tea made me feel refreshed all over.

She has a straightforward, forthcoming personality; whenever someone asks her for help, she never makes excuses or passes it around.

He explained the problem clearly and briskly, laying out the whole line of reasoning in just a few minutes.

Old Wang has always been direct when he speaks and is never vague about what he has promised, so everyone is glad to work with him.