a long search for something valuable or important a quest a negative reaction or opposition to something a pushback a violent attack an assault increasing or growing mounting to continue freely, without limits to go unchecked the energy that keeps a moving object moving and makes it hard to stop momentum to protect something officially, e.g. by including it in a law or policy to enshrine to publicly show your support for something to advocate https://339efcb25eb75e967b0d-ff8eeadd950d51fd1fc939dca75b3973.ssl.cf1.rackcdn.com/assets_default.swf