get (someone) onside(redirected from get them onside)
get (someone) onside
To gain someone's support or approval. If we can get the CEO onside, it would definitely help us to further this initiative.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
get/keep somebody onˈsideget/keep somebody’s support: The government needs to keep the major national newspapers onside to help win votes in the election.
Farlex Partner Idioms Dictionary © Farlex 2017