P.D.Q.

or PDQ

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. 2018

Word Origin and History for p.d.q.

P.D.Q.

also pdq, initialism for pretty damn quick, attested from 1875.

Online Etymology Dictionary, © 2010 Douglas Harper