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An initialism for "pretty darn/damn quick." Get that warrant and bring it here PDQ! We managed to get across town PDQ considering it was in the middle of rush hour.
An initialism for "examine your zipper pretty darn/damn quick" (with "X" used to represent "examine" to fit the pattern of "XYZ"). Said to someone whose pants are unzippered. Hey, Tom, XYZPDQ before you go into the meeting!
mod. pretty damn quick; very fast; very soon. (Initialism.) They had better get this mess straightened out PDQ if they know what’s good for them.
Acronym for “pretty damn quick,” indicating something that has occurred, or will or should occur, with considerable speed. This cliché dates from the late nineteenth century. The earliest citation listed by the OED is dated ca. 1875, when B. Woolf, in the play The Mighty Dollar, had a character say, “That’s right, you’d better step P.D.Q., pretty damn quick.” The synonym ASAP, the acronym for “as soon as possible,” has been used in a variety of contexts since the mid-1900s. For example, in a help wanted ad, “Housekeeper wanted ASAP,” or in a business memorandum, “Call him ASAP; he’ll be glad to talk to you.” ASAP also has been used for computer software (Advanced Systems Analysis Program) and often in music. It is the name of a hard rock band, the title of several popular songs, and the title of a composition by John Cage.