Assumed evangelicalism believes and signs up to the gospel. It certainly does not deny the gospel. But in terms of priorities, focus, and direction, assumed evangelicalism begins to give gradually increasing energy to concerns other than the gospel and key evangelical distinctives, to gradually elevate secondary issues to a primary level, to be increasingly worried about how it is perceived by others and to allow itself to be increasingly influenced both in content and method by the prevailing culture of the day.

Quoted from here (PDF).