一言为定 (yī yán wéi dìng) | Meaning: (idiom) it's a deal | Chinese Idiom with Pinyin & Origin

(lit.) a promise worth a thousand pieces of gold (idiom) · (fig.) a promise that can be counted on一诺千金yī nuò qiān jīn

to say one and mean just that (idiom); to keep one's word说一不二shuō yī bù èr

to speak and keep one's promise (idiom); as good as one's word言而有信yán ér yǒu xìn

to keep promises守信shǒu xìn

one word worth nine sacred tripods (idiom); words of enormous weight一言九鼎yī yán jiǔ dǐng

to stand one's ground against the opinion of the masses (idiom)力排众议lì pái zhòng yì

(idiom) it's a deal · that's settled then