"You have my word."What's meaning?

"You have my word."What's meaning? What‘s meaning of the word “impressive” what's the meaning of this word ? you have my word do you know what is my meaning? what's the meaning of the word?（同义句） What's the meaning of the underlined word fantastic "What's the meaning of the word 'drunk',dad? What's the chinese meaning of the underlined word"custom"? what's the meaning of this word "burning" in Chinese? What's meaning of the word "middle children"? .What's the meaning of the underlined word "fantastic"?