immediately; at once: You'd better get started P.D.Q.
rapid, agile, brisk, nimble, hot, quick, swift, careless, hurried, impulsive, urgent, sudden, abrupt, ill-advised, expeditious, reckless, instantaneously, immediately, directly, today
Origin of P.D.Q.
1870–75; p(retty) d(amn) q(uick)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
/ slang /
pretty damn quick
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
also pdq, initialism for pretty damn quick, attested from 1875.
Online Etymology Dictionary, © 2010 Douglas Harper