play a large part
play a large part (in something)
To have an extremely important or fundamental role (in some resultant situation, action, event, outcome, etc.). There were a lot of reason why I quit, but having to work 10 hours a day played a large part. Punk rock played a large part in forming my aesthetic sensibilities. The rookie quarterback ended up playing a large part in the team's amazing comeback victory yesterday.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
play a large part
(in something) Go to play a big part (in something).
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.