(colloquial, humorous) Used to indicate an unusual or unexpected situation.

(linguistics) The use of the auxiliary verb "do" in negative or interrogative English sentences that do not contain other auxiliaries.

plural of do-goodery

The supposedly helpful activities of a do-gooder.

(computing) A section of computer code in which an instruction or group of instructions is executed repeatedly depending on the value of a Boolean condition.

An island and self-governing province in South Korea.

plural of do-little

(colloquial) One who performs little though professing much.

(archaic) A lazy good-for-nothing.

plural of do-naught