at great length
(redirected from explain at great length)at great length
For a long duration. When I came home after curfew, my mom interrogated me at great length. He spoke at great length about how he had been inspired by his trip.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
*at great length
for a long period of time. (*Typically: explain ~; question someone ~; speak ~.) The lawyer questioned the witness at great length.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.