一言不發

The number one; single; a; as soon as; entire; whole; all; a "one" radical in Chinese characters; also used for clarity when spelling out numbers.

Words; speech; to say; to talk; to speak; to state; to tell; to ask.

Function word; no; not; un-; negative prefix; used to form questions or emphasize a statement; sometimes used for rhythm.

To send out or issue; to develop or grow; to start or begin; to inspire or enlighten; to make a profit.